CVE-2026-118658

Name	CVE-2026-118658
Description	Echo is a Go web framework. Prior to 4.15.2 and 5.1.1, Context.Scheme returns values from X-Forwarded-Proto, X-Forwarded-Protocol, or X-Url-Scheme without validating that they are supported web schemes. WWWRedirect and NonWWWRedirect use that value to construct a Location header, so an attacker controlling a forwarded scheme header can cause a redirect to use an arbitrary URI scheme. Exploitation requires an affected redirect middleware and user interaction with the response; the HTTPS-specific redirect variants hardcode HTTPS and are unaffected. This issue is fixed in 4.15.2 and 5.1.1.
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)
Debian Bugs	1152486

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)			1152486

Notes

https://github.com/labstack/echo/security/advisories/GHSA-23wf-92cp-8pcj
Fixed by: https://github.com/labstack/echo/commit/ca4f38a474302aabee93c66bdd0052359882e181 (v4.15.2)
Fixed by: https://github.com/labstack/echo/commit/d1d8ad3f99dd9b80542cd0c357d56a8916c515df (v5.1.1)