CVE-2026-55677 (GCVE-0-2026-55677)

Vulnerability from cvelistv5 – Published: 2026-06-26 16:15 – Updated: 2026-06-26 16:50
VLAI
Title
Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 16:50 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8083 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
labstack echo Affected: < 4.15.3
Affected: >= 5.0.0, < 5.2.0
guessed Create a notification for this product.
Show details on NVD website
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