Path Traversal in Labstack Echo
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…
Vulnerability class: Path Traversal (Directory Traversal)
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Labstack Echo — versions < 4.15.3, >= 5.0.0, < 5.2.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-55677?
- CVE-2026-55677 is a high-severity vulnerability in Labstack Echo, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-26.
- How severe is CVE-2026-55677?
- High severity. CVSS v3 base score is 7.5 out of 10.