VDB
CVE-2026-55677
CVE-2026-55677
PUBLISHED
CVSS 7.5 HIGH
Reported by GitHub_M · Published June 26, 2026
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| labstack | echo | < 4.15.3, >= 5.0.0, < 5.2.0 |
| github.com | labstack/echo/v5 | 0, 0, 0 |
| chainguard | temporal-fips | 0, 0, 0 |
| wolfi | kube-metrics-adapter | 0, 0, 0 |
| chainguard | listmonk | 0, 0, 0 |
| labstack | echo | < 4.15.3, < 4.15.3, >= 5.0.0, < 5.2.0 |
| chainguard | kube-metrics-adapter-fips | 0, 0, 0 |
| wolfi | temporal | 0, 0, 0 |
| chainguard | temporal | 0, 0, 0 |
| chainguard | kube-metrics-adapter | 0, 0, 0 |
| chainguard | falcosidekick-ui | 0, 0, 0 |
| chainguard | falcosidekick-ui-fips | 0, 0, 0 |
| wolfi | temporal-ui-server | 0, 0, 0 |
| github.com | labstack/echo/v4 | 0, 0, 0 |
| chainguard | temporal-ui-server-fips | 0, 0, 0 |
| github.com | labstack/echo | 0, 0, 0 |
| chainguard | temporal-ui-server | 0, 0, 0 |
Timeline
- Jun 26, 2026 CVE Published
- Jun 27, 2026 EPSS Score
- Jun 27, 2026 Coalition ESS Score
- Jun 29, 2026 Security Advisory
- Aug 7, 2026 EPSS Score
- Aug 20, 2026 Distribution Patch
- Aug 20, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 1, 2026 Distribution Patch
- Sep 1, 2026 Security Advisory
References
- https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-55677 advisory
- https://github.com/advisories/GHSA-vfp3-v2gw-7wfq advisory
- https://github.com/labstack/echo/pull/3009 patch
- https://github.com/labstack/echo/pull/3011 patch
- https://github.com/labstack/echo/commit/8d1ae9d3360a71672418856d58753af25f2c3986 patch
- https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725 patch
- https://github.com/labstack/echo/releases/tag/v4.15.3 url
- https://github.com/labstack/echo/releases/tag/v5.2.0 url