CVE-2026-118658
mediumEcho is a Go web framework.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/labstack/echo/commit/ca4f38a474302aabee93c66bdd0052359882e181 security-advisories@github.com
- https://github.com/labstack/echo/commit/d1d8ad3f99dd9b80542cd0c357d56a8916c515df security-advisories@github.com
- https://github.com/labstack/echo/releases/tag/v4.15.2 security-advisories@github.com
- https://github.com/labstack/echo/releases/tag/v5.1.1 security-advisories@github.com
- https://github.com/labstack/echo/security/advisories/GHSA-23wf-92cp-8pcj security-advisories@github.com