golang.org/x/crypto/ssh: Invoking client can cause server deadlock on unexpected responses
High-risk advisory
CVE-2026-39830
Summary
golang.org/x/crypto/ssh: Invoking client can cause server deadlock on unexpected responses
Why it matters
GitHub has published a reviewed security advisory for golang.org/x/crypto/ssh. Prioritize it with other application dependency updates, especially because EPSS places it in the 31% percentile.
Operator check
Check whether golang.org/x/crypto/ssh is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.4%; percentile: 31%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.