CVE-2011-4924: Zope XSS Vulnerability
Summary
CVE-2011-4924: Zope XSS Vulnerability. Affects zope versions >= 3.1.1, < 3.7.3. Fixed in 3.7.3. How to fix ↓
Also tracked for
- zope2 · PyPI
The same CVE-2011-4924 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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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. The vulnerability affects Zope versions 2.8.x through 2.12.x and 3.1.1 through 3.4.1. Zope's error message sanitization is incomplete, allowing remote attackers to inject arbitrary web script or HTML through various vectors.
Vulnerability Detail
The vulnerability in Zope allows for cross-site scripting (XSS) attacks. Attackers can exploit this issue to inject malicious scripts or HTML code into web pages viewed by users. This can lead to various security risks, such as stealing sensitive information, session hijacking, or performing unauthorized actions on behalf of the user. The vulnerability was initially reported as CVE-2010-1104, but an incomplete fix resulted in the existence of this new CVE-2011-4924.
How To Fix
Latest published version: 6.3.0 as of 23 Oct 2026
pip install --upgrade "zope==6.3.0"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
3.7.3
This is the first release that contains the fix.
pip install --upgrade "zope==3.7.3"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading immediately is not feasible, a temporary workaround is to implement additional input validation and output encoding in the affected application. This can help mitigate the risk of XSS attacks. However, this should be considered a temporary solution, and upgrading to the patched version is strongly recommended.
Conclusion
The Zope XSS vulnerability (CVE-2011-4924) allows remote attackers to inject arbitrary web script or HTML through various vectors. It is crucial to upgrade to the latest patched version of Zope to mitigate the risk of XSS attacks. Implementing additional input validation and output encoding can serve as a temporary workaround until the upgrade is performed. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for zope →
FAQ
Zope is an open-source web application server written in Python. It provides a framework for building dynamic web applications and content management systems.
Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts or HTML code into web pages viewed by users. This can lead to various security risks, such as stealing sensitive information or performing unauthorized actions on behalf of the user.
Attackers can exploit this vulnerability by injecting malicious scripts or HTML code into web pages viewed by users. This can be done through various vectors related to the way error messages are handled and sanitized in Zope.
The consequences of this vulnerability include the possibility of sensitive information theft, session hijacking, or performing unauthorized actions on behalf of the user. It can also lead to a loss of user trust and reputation damage for affected applications.
Yes, a fix is available for this vulnerability. It is recommended to upgrade to the latest patched version of Zope, which includes the necessary fixes and improvements to mitigate the risk of XSS attacks.
References
Related vulnerabilities
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