Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
High-risk advisory
CVE-2026-55677
Summary
Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
Why it matters
GitHub has published a reviewed security advisory for github.com/labstack/echo/v5. Prioritize it with other application dependency updates, especially because EPSS places it in the 36% percentile.
Operator check
Check whether github.com/labstack/echo/v5 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: 36%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.