CVE-2026-118654

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{"bugzilla": {"description": "github.com/labstack/echo: Echo: Information disclosure via path normalization in static file handlers", "id": "2563175", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563175"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-41", "details": ["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.", "A flaw was found in Echo. This vulnerability allows an unauthenticated remote attacker to bypass access controls and view protected files. When requests containing dot segments are sent to public static file handlers, the application normalizes the path after route matching has occurred, enabling the attacker to retrieve files that were intended to be restricted by route-level middleware."], "name": "CVE-2026-118654", "public_date": "2026-10-28T19:59:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-118654\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-118654\nhttps://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1\nhttps://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af\nhttps://github.com/labstack/echo/releases/tag/v4.16.0\nhttps://github.com/labstack/echo/releases/tag/v5.4.0\nhttps://github.com/labstack/echo/security/advisories/GHSA-3pmx-cf9f-34xr"], "statement": "Moderate severity is assigned to this vulnerability because successful exploitation requires a specific application architecture where public static handlers serve from directory hierarchies containing sensitive files guarded by middleware. In Red Hat environments, Go services embedding Echo are only exposed if publicly reachable static filesystem mounts overlap with restricted route paths. Without this overlapping directory layout, path traversal sequences using encoded dot-dot segments cannot access protected assets.", "threat_severity": "Moderate"}

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