Is CVE-2026-118654 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-118654?

CVE-2026-118654 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-118654

Description

Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo's static file handlers can normalize dot segments after route matching and serve a file through a public static route even though the corresponding direct path is protected by route-level middleware. An unauthenticated attacker can read files that an application intended to protect with route-level middleware, when those files are also reachable through a static filesystem mount after path normalization. This vulnerability is the result of an incomplete fix for CVE-2026-55677. This issue is fixed in 4.16.0 and 5.4.0.