CVE-2013-4196: Plone Object Manager Information Disclosure
Summary
CVE-2013-4196: Plone is vulnerable to information exposure via the object manager implementation. Affects plone across 3 version ranges.
>= 2.1, < 4.1.1
>= 4.2, < 4.2.6
>= 4.3, < 4.3.2
Fixed in 4.1.1, 4.2.6 or 4.3.2, depending on the release line you run. How to fix ↓
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Background
Plone is an open-source content management system built on top of the Zope application server. It provides a user-friendly interface for managing websites and supports various features such as content creation, collaboration, and workflow management. The Plone Object Manager is responsible for managing objects within the Plone system, including access control and metadata management.
Vulnerability Detail
The Plone Object Manager implementation in versions 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 suffers from an information disclosure vulnerability. The vulnerability arises due to improper access restrictions on internal methods. An attacker can exploit this vulnerability by sending a specially crafted request to the Plone system, allowing them to obtain sensitive information. The impact of this vulnerability can range from unauthorized access to sensitive data to potential privilege escalation.
How To Fix
Latest published version: 6.2.2 as of 23 Oct 2026
pip install --upgrade "plone==6.2.2"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.
-
>= 2.1, < 4.1.14.1.1pip install --upgrade "plone==4.1.1" -
>= 4.2, < 4.2.64.2.6pip install --upgrade "plone==4.2.6" -
>= 4.3, < 4.3.24.3.2pip install --upgrade "plone==4.3.2"
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
If upgrading to a fixed version is not immediately feasible, a temporary workaround can be implemented by restricting access to the affected Plone Object Manager methods. This can be achieved by modifying the access control settings or implementing custom access restrictions in the Plone configuration. However, applying the official fix by upgrading to a fixed version is strongly recommended.
Conclusion
The Plone Object Manager in Plone versions 2.1 through 4.3.1 is vulnerable to an information disclosure issue due to improper access restrictions. Upgrading to a fixed version or implementing access restrictions are recommended solutions. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
Plone is an open-source content management system built on top of the Zope application server. It provides a user-friendly interface for managing websites and supports various features such as content creation, collaboration, and workflow management.
The Plone Object Manager is responsible for managing objects within the Plone system, including access control and metadata management.
The vulnerability arises due to improper access restrictions on internal methods in the Plone Object Manager implementation. This allows remote attackers to obtain sensitive information by sending crafted requests.
The vulnerability can lead to unauthorized access to sensitive information stored within the Plone system. It may also enable privilege escalation, allowing attackers to gain elevated privileges within the system.
To fix this vulnerability, it is recommended to upgrade to a fixed version of Plone (4.1.1, 4.2.6, or 4.3.2). Alternatively, access restrictions on the affected Plone Object Manager methods can be implemented as a temporary workaround.
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