Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps
High-risk advisory
CVE-2026-55431
Summary
Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps
Why it matters
GitHub has published a reviewed security advisory for github.com/coder/coder/v2. Prioritize it with other application dependency updates.
Operator check
Check whether github.com/coder/coder/v2 is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.