CVE-2026-33212: Weblate Improper Access Control for Pending Tasks in API
Summary
CVE-2026-33212: Weblate: Improper access control for pending tasks in API. Affects weblate versions < 5.17. Fixed in 5.17. How to fix ↓
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Background
Weblate is a web-based translation management system that facilitates collaborative translation of software and documents. It allows users to manage translation projects, track changes, and collaborate in real-time. However, a recent vulnerability has been identified in its API, which could potentially expose sensitive information to unauthorized users.
Vulnerability Detail
The vulnerability arises from improper access control in the API for tasks, where user access for pending tasks is not adequately verified. This oversight can lead to unauthorized users gaining access to logs of in-progress operations, which may contain sensitive information related to translation tasks. The issue was identified by Michal Čihař and is classified under CWE-284, indicating a failure to enforce proper access controls.
How To Fix
Latest published version: 2026.10.1 as of 22 Oct 2026
pip install --upgrade "weblate==2026.10.1"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
5.17
This is the first release that contains the fix.
pip install --upgrade "weblate==5.17"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, it is important to note that an attacker would need to guess the random UUID of the task to exploit this vulnerability. Given the default API rate limits, this makes successful exploitation unlikely.
Conclusion
In summary, CVE-2026-33212 represents a significant security concern for Weblate users due to improper access control in its API. It is crucial to update to the latest version to mitigate risks and protect sensitive information.
See every vulnerability recorded for weblate →
FAQ
CVE-2026-33212 is a vulnerability in Weblate that allows improper access control for pending tasks in its API.
The vulnerability could expose logs of in-progress operations to unauthorized users, potentially revealing sensitive information.
You can fix this vulnerability by updating Weblate to version 5.17 or later using the command: pip install --upgrade weblate==5.17.
Yes, the workaround involves relying on the difficulty of guessing the random UUID of the task, which is unlikely to succeed due to API rate limits.
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References
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