Intel

AIKIDO-2026-11027

golang.org/x/crypto is vulnerable to Authorization Bypass

Authorization BypassCVE-2026-42508 Published Yesterday

91

Critical Risk

This Affects:

GOgolang.org/x/crypto
0.0.0 - 0.51.0
Fixed in 0.52.0
Are you affected? Scan for Free

TL;DR

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.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and if you use the golang.org/x/crypto/ssh/knownhosts functionalities.

Background info

golang.org/x/crypto is vulnerable to Authorization Bypass in versions 0.0.0 - 0.51.0.

How to fix this

Upgrade the golang.org/x/crypto library to the patch version.