CVE-2026-55677
Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.
- Score
- CVSS 3.1 7.5 High
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-06-26
- Last modified
- 2026-10-25
- Weaknesses
- CWE-22
Affected products
References
- https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq
