GO-2026-5381

    Dashboard / Vulnerabilities / GO-2026-5381

    GO-2026-5381

    Published: 25 Jun 2026Last Modified: 27 Jun 2026

    Summary: Prometheus vulnerable to stored XSS via crafted histogram bucket label values in the old web UI heatmap display in github.com/prometheus/prometheus

    Details: Prometheus vulnerable to stored XSS via crafted histogram bucket label values in the old web UI heatmap display in github.com/prometheus/prometheus

    References: https://github.com/prometheus/prometheus/security/advisories/GHSA-fw8g-cg8f-9j28, https://nvd.nist.gov/vuln/detail/CVE-2026-44903, https://github.com/prometheus/prometheus/commit/38f23b9075ced1de2b82d2dad8b2bebb1ecd5b7d

    Affected packages

    Package

    Name: github.com/prometheus/prometheus

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

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -0.311.3

    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