CVE-2026-118655

Name	CVE-2026-118655
Description	Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, middleware.Static can decode an already decoded Request.URL.Path a second time. Double-encoded separators can consequently be reconstructed before filesystem resolution. This can reach a file under a guarded route when the static middleware is registered globally. This issue is fixed in 4.15.3 and 5.2.0.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-github-labstack-echo (PTS)	bookworm	4.2.1-3	vulnerable
	forky, sid, trixie	4.12.0-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-github-labstack-echo	source	(unstable)	(unfixed)

Notes

https://github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96
https://github.com/labstack/echo/issues/2599
https://github.com/labstack/echo/pull/3006
Fixed by; https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725 (v4.15.3)
Fixed by: https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6 (v5.2.0)