CLEANSTART-2026-MU53831

    Dashboard / Vulnerabilities / CLEANSTART-2026-MU53831

    CLEANSTART-2026-MU53831

    Published: 31 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2021-28957

    Summary: XSS vulnerability was discovered in python-lxml's clean module versions before 4

    Details: CVE-2021-28957 affects multiple packages. An XSS vulnerability was discovered in python-lxml's clean module versions before 4. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-MU53831.json, https://osv.dev/vulnerability/CVE-2021-28957, https://nvd.nist.gov/vuln/detail/CVE-2021-28957

    Affected packages

    Package

    Name: py3-lxml

    Purl: pkg:apk/cleanstart/py3-lxml

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.6.3-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-2026-MU53831 | CVE-DB