MEDIUMCVSS 5.9EPSS 0.3%

CVE-2026-118655

CVE-2026-118655 updated by NVD

Published: 2026-10-28
Modified: 2026-10-31
EPSS percentile: 23%
Sources: github-advisory, nvd

Summary

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 packages

Ecosystem	Package	Affected versions	Fixed versions
Go	github.com/labstack/echo/v4	—	4.15.3
Go	github.com/labstack/echo/v5	—	5.2.0

Remediation: Upgrade to 4.15.3 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-118655

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.

EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.