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fix(deps): update module golang.org/x/crypto to v0.52.0 [security] - #23

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fix(deps): update module golang.org/x/crypto to v0.52.0 [security]#23
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renovate/go-golang.org-x-crypto-vulnerability

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@alaudaa-renovate alaudaa-renovate Bot commented Jun 18, 2026

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This PR contains the following updates:

Package Change Age Confidence
golang.org/x/crypto v0.50.0 -> v0.52.0 age confidence

GitHub Vulnerability Alerts

CVE-2024-45337

Applications and libraries which misuse the ServerConfig.PublicKeyCallback callback may be susceptible to an authorization bypass.

The documentation for ServerConfig.PublicKeyCallback says that "A call to this function does not guarantee that the key offered is in fact used to authenticate." Specifically, the SSH protocol allows clients to inquire about whether a public key is acceptable before proving control of the corresponding private key. PublicKeyCallback may be called with multiple keys, and the order in which the keys were provided cannot be used to infer which key the client successfully authenticated with, if any. Some applications, which store the key(s) passed to PublicKeyCallback (or derived information) and make security relevant determinations based on it once the connection is established, may make incorrect assumptions.

For example, an attacker may send public keys A and B, and then authenticate with A. PublicKeyCallback would be called only twice, first with A and then with B. A vulnerable application may then make authorization decisions based on key B for which the attacker does not actually control the private key.

Since this API is widely misused, as a partial mitigation golang.org/x/crypto@v0.31.0 enforces the property that, when successfully authenticating via public key, the last key passed to ServerConfig.PublicKeyCallback will be the key used to authenticate the connection. PublicKeyCallback will now be called multiple times with the same key, if necessary. Note that the client may still not control the last key passed to PublicKeyCallback if the connection is then authenticated with a different method, such as PasswordCallback, KeyboardInteractiveCallback, or NoClientAuth.

Users should be using the Extensions field of the Permissions return value from the various authentication callbacks to record data associated with the authentication attempt instead of referencing external state. Once the connection is established the state corresponding to the successful authentication attempt can be retrieved via the ServerConn.Permissions field. Note that some third-party libraries misuse the Permissions type by sharing it across authentication attempts; users of third-party libraries should refer to the relevant projects for guidance.

CVE-2025-22869

SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.

CVE-2025-58181

SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause unbounded memory consumption.

CVE-2025-47914

SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.

CVE-2026-46598

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.

CVE-2026-39831

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@​openssh.com, sk-ssh-ed25519@​openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.

CVE-2026-42508

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @​revoked.

CVE-2026-39828

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

CVE-2026-39832

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@​openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

CVE-2026-46597

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

CVE-2026-46595

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

CVE-2026-39835

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

CVE-2026-39830

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

CVE-2026-39834

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

CVE-2026-39829

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

CVE-2026-39833

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

CVE-2026-39827

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.


Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh

CVE-2026-46595 / GHSA-x527-x647-q7gg / GO-2026-5023

More information

Details

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto: Invoking memory leak when rejecting channels can lead to DoS

CVE-2026-39827 / GHSA-qpw4-5x99-6vjp / GO-2026-5016

More information

Details

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

Severity

  • CVSS Score: 6.5 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent

CVE-2026-46598 / GHSA-9m57-25v3-79x9 / GO-2026-5033

More information

Details

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto doesn't drop invoking agent constraints when forwarding keys

CVE-2026-39832 / GHSA-f5wc-c3c7-36mc / GO-2026-5006

More information

Details

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@​openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

CVE-2026-39830 / GHSA-vgwf-h737-ff37 / GO-2026-5017

More information

Details

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent

CVE-2026-39833 / GHSA-jppx-rxg9-jmrx / GO-2026-5005

More information

Details

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


Invoking auth bypass via unenforced @​revoked status in golang.org/x/crypto/ssh/knownhosts

CVE-2026-42508 / GHSA-5cgq-3rg8-m6cv / GO-2026-5021

More information

Details

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @​revoked.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto: Invoking client can cause server deadlock on unexpected responses

CVE-2026-39830 / GHSA-vgwf-h737-ff37 / GO-2026-5017

More information

Details

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh

CVE-2026-39834 / GHSA-rm3j-f69w-wqmq / GO-2026-5020

More information

Details

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto vulnerable to auth bypass via unenforced @​revoked status

CVE-2026-42508 / GHSA-5cgq-3rg8-m6cv / GO-2026-5021

More information

Details

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @​revoked.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

CVE-2026-39832 / GHSA-f5wc-c3c7-36mc / GO-2026-5006

More information

Details

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@​openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto: Invoking pathological inputs can lead to client panic

CVE-2026-46598 / GHSA-9m57-25v3-79x9 / GO-2026-5033

More information

Details

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.

Severity

  • CVSS Score: 5.3 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

CVE-2026-39828 / GHSA-45gg-vh54-h5m9 / GO-2026-5014

More information

Details

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh

CVE-2026-39831 / GHSA-89gr-r52h-f8rx / GO-2026-5019

More information

Details

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@​openssh.com, sk-ssh-ed25519@​openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto: Invoking pathological RSA/DSA parameters may cause DoS

CVE-2026-39829 / GHSA-w879-237q-wc7r / GO-2026-5018

More information

Details

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

Severity

  • CVSS Score: 7.5 / 10 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


golang.org/x/crypto vulnerable to infinite loop on large channel writes

CVE-2026-39834 / GHSA-rm3j-f69w-wqmq / GO-2026-5020

More information

Details

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


golang.org/x/crypto doesn't enforce invoking key constraints

CVE-2026-39833 / GHSA-jppx-rxg9-jmrx / GO-2026-5005

More information

Details

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


golang.org/x/crypto vulnerable to invoking bypass of certificate restrictions

CVE-2026-39828 / GHSA-45gg-vh54-h5m9 / GO-2026-5014

More information

Details

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

Severity

  • CVSS Score: 6.3 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


golang.org/x/crypto: FIDO/U2F security key physical presence check can be bypassed

CVE-2026-39831 / GHSA-89gr-r52h-f8rx / GO-2026-5019

More information

Details

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@​openssh.com, sk-ssh-ed25519@​openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

CVE-2026-39835 / GHSA-78mq-xcr3-xm33 / GO-2026-5015

More information

Details

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

Severity

Unknown

References

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).


golang.org/x/crypto: Invoking VerifiedPublicKeyCallback permissions skip enforcement

CVE-2026-46595 / GHSA-x527-x647-q7gg / GO-2026-5023

More information

Details

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

Severity

  • CVSS Score: 10.0 / 10 (Critical)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


golang.org/x/crypto: Invoking byte arithmetic causes underflow and panic

CVE-2026-46597 / GHSA-q4h4-gmj2-qvw2 / GO-2026-5013

More information

Details

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

Severity

  • CVSS Score: 7.5 / 10 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).


Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh

[CVE-

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ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

  • 3 additional dependencies were updated

Details:

Package Change
golang.org/x/net v0.53.0 -> v0.54.0
golang.org/x/sys v0.44.0 -> v0.45.0
golang.org/x/text v0.36.0 -> v0.37.0

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