Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests

[ Description ]Official description

Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5's BodyDump middleware can discard a BodyLimit overflow error for an unknown-length request when BodyDump's capture limit is below the BodyLimit threshold. BodyDump drains the remaining body while ignoring read errors and replaces it with the captured prefix, so an HTTP/1.1 chunked request can be truncated and processed successfully even though the original body exceeded the configured limit. Known-length requests rejected before BodyDump runs are unaffected, and the issue does not establish a general authentication bypass or denial of service. This issue is fixed in 5.4.1.

[ Fixes ]Fixes and patches

• github.com/labstack/echo/v5 5.4.1Fixed version · GitHub Advisories · go package github.com/labstack/echo/v5: upgrade to 5.4.1 or later (affected >= 5.0.0, < 5.4.1)

[ Packages ]Affected open-source packages

• github.com/labstack/echo/v5 goAffected >= 5.0.0, < 5.4.1 · fixed in 5.4.1 · GHSA-x9ff-22gv-65f4

[ References ]References

• github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec
• github.com/labstack/echo/pull/3105
• github.com/labstack/echo/releases/tag/v5.4.1
• github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4