PYSEC-2026-459

    Dashboard / Vulnerabilities / PYSEC-2026-459

    PYSEC-2026-459

    Published: 29 Jun 2026Last Modified: 10 Sept 2026

    Summary: Plone Unauthenticated Write Vulnerability

    Details: A privilege escalation issue in plone.app.contenttypes in Plone 4.3 through 5.2.1 allows users to PUT (overwrite) some content without needing write permission.

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-7941, https://github.com/plone/plone.app.contenttypes, https://github.com/plone/plone.app.contenttypes/blob/master/CHANGES.rst?plain=1#L372-L374, https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2020-90.yaml, https://plone.org/security/hotfix/20200121, https://plone.org/security/hotfix/20200121/privilege-escalation-for-overwriting-content, https://www.openwall.com/lists/oss-security/2020/01/22/1, http://www.openwall.com/lists/oss-security/2020/01/24/1, https://pypi.org/project/plone-app-contenttypes, https://github.com/advisories/GHSA-w6g9-xccc-347h

    Affected packages

    Package

    Name: plone-app-contenttypes

    Purl: pkg:pypi/plone-app-contenttypes

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.1.6

    Affected versions

    1.0

    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
    PYSEC-2026-459 | CVE-DB