CVE-2008-5646: Trac Denial of Service Vulnerability

trac Updated 02 Oct 2025

Summary

17/05/2022
Yes i
High
7.5

CVE-2008-5646: Trac vulnerable to denial of service. Affects trac versions < 0.11.2. Fixed in 0.11.2. How to fix ↓

Also tracked for

The same CVE-2008-5646 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

Trac is an open-source project management and issue tracking system written in Python. It provides a web-based interface for managing software development projects. Trac allows users to create and edit wiki pages using a specific markup language. This vulnerability affects Trac versions prior to 0.11.2.

Vulnerability Detail

The vulnerability in Trac before 0.11.2 is an unspecified issue that allows attackers to cause a denial of service. The exact attack vectors related to certain wiki markup are not disclosed. However, it is known that these attack vectors can be exploited to trigger a denial of service condition. The impact of this vulnerability could result in the unavailability of Trac, affecting the productivity and workflow of software development teams.

How To Fix

Latest published version: 1.6.0 as of 22 Oct 2026

pip install --upgrade "trac==1.6.0"

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

If you need the minimum change

0.11.2

This is the first release that contains the fix.

pip install --upgrade "trac==0.11.2"

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Workaround

No specific workaround is provided for this vulnerability. The recommended solution is to apply the available patch or upgrade to the fixed version of Trac.

Conclusion

In conclusion, Trac versions prior to 0.11.2 are vulnerable to a denial of service attack. To mitigate this vulnerability, it is crucial to upgrade Trac to the fixed version or apply the available patches. For further assistance and support in vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for trac →

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FAQ

Trac is an open-source project management and issue tracking system written in Python. It provides a web-based interface for managing software development projects.

This vulnerability allows attackers to cause a denial of service, potentially leading to the unavailability of Trac and disrupting software development workflows.

To fix this vulnerability, it is recommended to upgrade Trac to version 0.11.2 or later. This version includes the necessary patches to address the denial of service vulnerability.

No specific workarounds are provided for this vulnerability. Upgrading to the fixed version is the recommended solution.

For more information about this vulnerability, you can refer to the CVE identifier CVE-2008-5646 or the GitHub Security Advisory GHSA-437p-qw95-wqqr.

Related vulnerabilities

Recent vulnerabilities recorded for trac.

How To Fix

Latest published version: 1.6.0 as of 22 Oct 2026

pip install --upgrade "trac==1.6.0"

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

If you need the minimum change

0.11.2

This is the first release that contains the fix.

pip install --upgrade "trac==0.11.2"

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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