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

Date Jun 25, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product Go ยท golang.org/x/crypto/ssh
CVE CVE-2026-39834
High-risk advisory CVE-2026-39834

Summary

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

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 37% 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: 0.5%; percentile: 37%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.