Encoding Vulnerability in Echo Framework by Labstack
CVE-2026-118650

7.5HIGH

Key Information:

Vendor

Labstack

Status
Echo
Vendor
CVE Published:
28 October 2026

What is CVE-2026-118650?

The Echo framework by Labstack has an encoding vulnerability that emerges from a conflict in handling encoded request paths. Versions prior to 4.16.0 and 5.4.0 possess global middleware.Static instances that interpret encoded paths inconsistently. While the Echo router continues to match the encoded path, the static handler utilizes the decoded URL.Path. This inconsistency may give rise to unexpected file resolutions under the static root, thus compromising security in certain configurations. Upgrading to versions 4.16.0 or 5.4.0 effectively mitigates this issue.

Affected Version(s)

echo >= 5.0.0, < 5.4.0 < 5.0.0, 5.4.0

echo < 4.16.0 < 4.16.0

References

https://github.com/labstack/echo/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/labstack/echo/commit/b838391e2eade87ae...
x_refsource_MISC
https://github.com/labstack/echo/commit/fc410094b2f3415cf...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.