CVE-2026-118654

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    CVE-2026-118654

    Published: 28 Oct 2026Last Modified: 5 Nov 2026

    Summary: Echo static file middleware route protection bypass via encoded dot-dot traversal

    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.

    References: https://github.com/labstack/echo/releases/tag/v4.16.0, https://github.com/labstack/echo/releases/tag/v5.4.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118654.json, https://github.com/labstack/echo/security/advisories/GHSA-3pmx-cf9f-34xr, https://nvd.nist.gov/vuln/detail/CVE-2026-118654, https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1, https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e75c6c6d0c99602336fcf2c6bf6c8475ee160683

    Affected versions

    v5.3.1
    v5.3.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-118654 | CVE-DB