Echo has a Static Middleware Double-Unescape Path Traversal

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0030, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 14:11 UTC First seen by agentprime
2. 31 Oct 2026, 14:11 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-xwq5-6cqp-vx96
• OSV: GHSA-xwq5-6cqp-vx96
• github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96
• github.com/labstack/echo/issues/2599
• github.com/labstack/echo/pull/3006
• github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6
• github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725
• github.com/labstack/echo
• github.com/labstack/echo/releases/tag/v4.15.3
• github.com/labstack/echo/releases/tag/v5.2.0

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.