PYSEC-2026-766

    Dashboard / Vulnerabilities / PYSEC-2026-766

    PYSEC-2026-766

    Published: 2 Jul 2026Last Modified: 13 Jul 2026

    Summary: Zope XSS Vulnerability

    Details: Cross-site scripting (XSS) vulnerability in Zope 2.8.x before 2.8.12, 2.9.x before 2.9.12, 2.10.x before 2.10.11, 2.11.x before 2.11.6, and 2.12.x before 2.12.3, 3.1.1 through 3.4.1. allows remote attackers to inject arbitrary web script or HTML via vectors related to the way error messages perform sanitization. NOTE: this issue exists because of an incomplete fix for CVE-2010-1104

    References: https://nvd.nist.gov/vuln/detail/CVE-2011-4924, https://github.com/zopefoundation/Zope/commit/37e4ea774acc668f6b430a45a6ab1e359710f590, https://github.com/zopefoundation/Zope/commit/a0655194cb39ad88ce3323a3e489927c5f979c44, https://access.redhat.com/security/cve/cve-2011-4924, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4924, https://github.com/zopefoundation/Zope, https://security-tracker.debian.org/tracker/CVE-2011-4924, http://www.openwall.com/lists/oss-security/2012/01/19/16, http://www.openwall.com/lists/oss-security/2012/01/19/17, http://www.openwall.com/lists/oss-security/2012/01/19/18, http://www.openwall.com/lists/oss-security/2012/01/19/19, https://pypi.org/project/zope2, https://github.com/advisories/GHSA-vh6g-786f-hxxp

    Affected packages

    Package

    Name: zope2

    Purl: pkg:pypi/zope2

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.12.22

    Affected versions

    2.12.0
    2.12.0.a1
    2.12.0a2
    2.12.0a3
    2.12.0a4
    2.12.0b1
    2.12.0b2
    2.12.0b3
    2.12.0b4
    2.12.0c1
    2.12.1
    2.12.10
    2.12.11
    2.12.12
    2.12.13
    2.12.14
    2.12.15
    2.12.16
    2.12.17
    2.12.18
    2.12.19
    2.12.2
    2.12.20
    2.12.21
    2.12.3
    2.12.4
    2.12.5
    2.12.6
    2.12.7
    2.12.8
    2.12.9

    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-2026-766 | CVE-DB