GO-2026-6558

    Dashboard / Vulnerabilities / GO-2026-6558

    GO-2026-6558

    Published: 1 Oct 2026Last Modified: 1 Oct 2026

    Summary: Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

    Details: Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/traefik/traefik from v3.6.11 before v3.7.13.

    References: https://github.com/traefik/traefik/security/advisories/GHSA-8fcf-v89g-xpg6, https://nvd.nist.gov/vuln/detail/CVE-2026-88010, https://github.com/traefik/traefik/commit/ddc1bf4660b85fd61fafdd821eb8216fb1a0b130, https://github.com/traefik/traefik/pull/13816, https://github.com/traefik/traefik/releases/tag/v3.7.13

    Affected packages

    Package

    Name: github.com/traefik/traefik

    Purl: pkg:golang/github.com/traefik/traefik

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    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
    GO-2026-6558 | CVE-DB