Update module golang.org/x/crypto to v0.52.0 [SECURITY] - #53
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ℹ Artifact update noticeFile name: go.modIn order to perform the update(s) described in the table above, Renovate ran the
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SummarySecurity update for golang.org/x/crypto dependency from v0.17.0 to v0.31.0, addressing CVE-2024-45337 and CVE-2025-22869 vulnerabilities. Also updates golang.org/x/text to v0.21.0. Walkthrough
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This PR contains the following updates:
v0.17.0→v0.52.0Misuse of ServerConfig.PublicKeyCallback may cause authorization bypass in golang.org/x/crypto
CVE-2024-45337 / GHSA-v778-237x-gjrc
More information
Details
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto Vulnerable to Denial of Service (DoS) via Slow or Incomplete Key Exchange
CVE-2025-22869 / GHSA-hcg3-q754-cr77
More information
Details
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto/ssh allows an attacker to cause unbounded memory consumption
CVE-2025-58181 / GHSA-j5w8-q4qc-rx2x
More information
Details
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto/ssh/agent vulnerable to panic if message is malformed due to out of bounds read
CVE-2025-47914 / GHSA-f6x5-jh6r-wrfv
More information
Details
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LReferences
This data is provided by 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
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto vulnerable to auth bypass via unenforced @revoked status
CVE-2026-42508 / GHSA-5cgq-3rg8-m6cv
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto is vulnerable to invoking server panic during CheckHostKey/Authenticate flow
CVE-2026-39835 / GHSA-78mq-xcr3-xm33
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto: Invoking VerifiedPublicKeyCallback permissions skip enforcement
CVE-2026-46595 / GHSA-x527-x647-q7gg
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:LReferences
This data is provided by 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HReferences
This data is provided by 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto: Invoking pathological inputs can lead to client panic
CVE-2026-46598 / GHSA-9m57-25v3-79x9
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LReferences
This data is provided by 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
golang.org/x/crypto: Invoking pathological RSA/DSA parameters may cause DoS
CVE-2026-39829 / GHSA-w879-237q-wc7r
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory 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
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
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