CVE-2012-5489: zope2 - Unauthorized Access to Restricted Attributes

zope2 Updated 02 Oct 2025

Summary

30/09/2014

Disclosed on

CVE-2012-5489

CVE

Yes i

Fix available

High

Severity

6.5

CVSS Score

CVE-2012-5489: The App.Undo.UndoSupport.get_request_var_or_attr function in Zope before 2.12.21 and 2.13.x before 2.13.11, as used in Plone before 4.2.3 and 4.3 before beta 1, allows remote authenticated users to gain access to restric... Affects zope2 across 2 version ranges.

< 2.12.21 >= 2.13, < 2.13.11

Fixed in 2.12.21 or 2.13.11, depending on the release line you run. How to fix ↓

Also tracked for

plone · PyPI

The same CVE-2012-5489 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or Browse

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats

SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml

Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile

Javascript package-lock.json · yarn.lock · pnpm-lock.yaml

PHP composer.lock

Python poetry.lock · requirements.txt · Pipfile.lock

Go go.mod

Rust Cargo.lock

Ruby Gemfile.lock

Dart pubspec.lock

C/C++ conan.lock

Elixir mix.lock

Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Background

Zope is an open-source web application server written in Python. It provides a framework for building dynamic web applications and content management systems. Zope2 is a legacy version of Zope that includes additional features and compatibility layers. The App.Undo.UndoSupport.get_request_var_or_attr function in Zope before 2.12.21 and 2.13.x before 2.13.11, as used in Plone before 4.2.3 and 4.3 before beta 1, is vulnerable to unauthorized access to restricted attributes.

Vulnerability Detail

The vulnerability allows remote authenticated users to gain access to restricted attributes through unspecified vectors. This can lead to unauthorized actions or disclosure of sensitive information. The exact vectors of exploitation are not specified in the vulnerability details.

How To Fix

Latest published version: 4.0.0 as of 23 Oct 2026

pip install --upgrade "zope2==4.0.0"

Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.

If you can't move to the latest

The minimum fixed version depends on the release line you run.

< 2.12.21 2.12.21
```
pip install --upgrade "zope2==2.12.21"
```
>= 2.13, < 2.13.11 2.13.11
```
pip install --upgrade "zope2==2.13.11"
```

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Workaround

No specific workaround is mentioned in the vulnerability details.

Conclusion

The vulnerability in Zope2 allows remote authenticated users to gain unauthorized access to restricted attributes. To mitigate this issue, it is crucial to upgrade to the fixed versions of Zope and Plone as recommended. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for zope2 →

FAQ

What is Zope?

Zope is an open-source web application server written in Python. It provides a framework for building dynamic web applications and content management systems.

What is Zope2?

Zope2 is a legacy version of Zope that includes additional features and compatibility layers.

What is the impact of this vulnerability?

The vulnerability allows remote authenticated users to gain access to restricted attributes, potentially leading to unauthorized actions or disclosure of sensitive information.

How can I fix this vulnerability?

To fix this vulnerability, it is recommended to upgrade to a fixed version of Zope. Upgrade to Zope 2.12.21 or later if using Zope 2.12.x, or upgrade to Zope 2.13.11 or later if using Zope 2.13.x. Additionally, it is advised to update to Plone 4.2.3 or later if using Plone.