CLEANSTART-2024-QT54889

    Dashboard / Vulnerabilities / CLEANSTART-2024-QT54889

    CLEANSTART-2024-QT54889

    Published: 31 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2020-26956

    Summary: In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS

    Details: CVE-2020-26956 affects multiple packages. In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-QT54889.json, https://osv.dev/vulnerability/CVE-2020-26956, https://nvd.nist.gov/vuln/detail/CVE-2020-26956

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:apk/cleanstart/thunderbird

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -78.5.1-r0

    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
    CLEANSTART-2024-QT54889 | CVE-DB