---
id: CVE-2011-4924
aliases:
  - GHSA-vh6g-786f-hxxp
  - PYSEC-2026-766
title: Zope XSS Vulnerability
summary: Zope XSS Vulnerability
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
vendor: zope
product: zope
ecosystem: pip
affected:
  - 'zope >= 3.1.1, < 3.7.3'
  - zope2 < 2.12.22
  - 'zope2 >= 2.13.0a1, < 2.13.12'
patched:
  - zope 3.7.3
  - zope2 2.12.22
  - zope2 2.13.12
published: '2022-04-22'
updated: '2026-07-06'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-vh6g-786f-hxxp'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2011-4924'
  - url: >-
      https://github.com/zopefoundation/Zope/commit/37e4ea774acc668f6b430a45a6ab1e359710f590
  - url: >-
      https://github.com/zopefoundation/Zope/commit/a0655194cb39ad88ce3323a3e489927c5f979c44
  - url: 'https://access.redhat.com/security/cve/cve-2011-4924'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4924'
  - url: 'https://github.com/zopefoundation/Zope'
  - url: 'https://security-tracker.debian.org/tracker/CVE-2011-4924'
  - url: 'http://www.openwall.com/lists/oss-security/2012/01/19/16'
  - url: 'http://www.openwall.com/lists/oss-security/2012/01/19/17'
  - url: 'http://www.openwall.com/lists/oss-security/2012/01/19/18'
  - url: 'http://www.openwall.com/lists/oss-security/2012/01/19/19'
tags:
  - osv
  - pip
epss: 0.01362
epssPercentile: 0.70121
ingestedAt: '2026-07-08T18:25:53.330Z'
---

## Overview

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

## Affected packages

- `zope >= 3.1.1, < 3.7.3`
- `zope2 < 2.12.22`
- `zope2 >= 2.13.0a1, < 2.13.12`

## Remediation

Upgrade to a patched release:

- `zope 3.7.3`
- `zope2 2.12.22`
- `zope2 2.13.12`