Vulnerability/
https://seclists.org/oss-sec/2026/q2/663

https://seclists.org/oss-sec/2026/q2/663: Vulnerabilities in golang.org/x/crypto

Q: Which release contains fixes for the reported issues?

The issues are addressed in golang.org/x/crypto version v0.52.0.

Q: Which deployments could be exposed to denial of service?

Code using ssh/agent may panic when a crafted input causes malformed wire bytes to be cast as an ed25519.PrivateKey. SSH servers using the AES-GCM packet decoder may also panic when processing well-crafted inputs.

Q: What authentication behavior should SSH server operators review?

Review authentication callbacks that return PartialSuccessError with non-nil Permissions. In the affected behavior, those permissions could be silently discarded, potentially causing certificate restrictions to be dropped.

Published May 22, 2026

Updated

Affected Software

1 affected component

go/golang.org/x/crypto<v0.52.0

Frequently Asked Questions

Which release contains fixes for the reported issues?

The issues are addressed in golang.org/x/crypto version v0.52.0.

Which deployments could be exposed to denial of service?

Code using ssh/agent may panic when a crafted input causes malformed wire bytes to be cast as an ed25519.PrivateKey. SSH servers using the AES-GCM packet decoder may also panic when processing well-crafted inputs.

What authentication behavior should SSH server operators review?

Review authentication callbacks that return PartialSuccessError with non-nil Permissions. In the affected behavior, those permissions could be silently discarded, potentially causing certificate restrictions to be dropped.

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