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.
Metrics
CVSS 3.1 5.9/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| labstack | echo | >= 5.0.0, < 5.2.0; < 4.15.3 |
References
- https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6
- https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725
- https://github.com/labstack/echo/issues/2599
- https://github.com/labstack/echo/pull/3006
- https://github.com/labstack/echo/releases/tag/v4.15.3
- https://github.com/labstack/echo/releases/tag/v5.2.0
- https://github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96
Timeline
- Published
- Oct 28, 2026
- Last modified
- Oct 29, 2026
- NVD status
- Undergoing Analysis