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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| labstack | echo | >= 5.0.0, < 5.2.0, < 4.15.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | golang-github-labstack-echo | No fix yet | — |
| Debian 13 | golang-github-labstack-echo | No fix yet | — |
| Debian 12 | golang-github-labstack-echo | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-labstack-echo | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-labstack-echo | No fix yet | — |
| Ubuntu 24.04 LTS | golang-github-labstack-echo | No fix yet | — |
| Ubuntu 22.04 LTS | golang-github-labstack-echo +2 | No fix yet | — |
| Ubuntu 20.04 LTS | golang-github-labstack-echo.v2 +1 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/labstack/echo/v4 | < 4.15.3 | 4.15.3 | GHSA-xwq5-6cqp-vx96 |
| Go | github.com/labstack/echo/v5 | < 5.2.0 | 5.2.0 | GHSA-xwq5-6cqp-vx96 |
References
- 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
- https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6
- https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725
- https://github.com/labstack/echo/releases/tag/v4.15.3
- https://github.com/labstack/echo/releases/tag/v5.2.0