GHSA-6jp6-9rf9-gc66 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in weblate. A fix is available for weblate — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-6jp6-9rf9-gc66 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
weblateReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Due to improper neutralization, it was possible to perform cross-site scripting via crafted user and language names.
Patches
The issues were fixed in the 4.11 release. The following commits are addressing it:
- f6753a1a1c63fade6ad418fbda827c6750ab0bda
- 9e19a8414337692cc90da2a91c9af5420f2952f1
- 22d577b1f1e88665a88b4569380148030e0f8389
Workarounds
You can look for crafted user and language names to see if you were affected.
References
- https://hackerone.com/reports/1486674
- https://hackerone.com/reports/1486718
- https://hackerone.com/reports/1485226
For more information
If you have any questions or comments about this advisory:
- Open a topic in discussions
- Email us at [email protected]
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | weblate | all versions | 4.11pip install --upgrade 'weblate==4.11' |
Affected Products
weblateweblateDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for weblate, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update weblate to 4.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6jp6-9rf9-gc66 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is GHSA-6jp6-9rf9-gc66 in your dependencies?
Find it across PyPI, including transitive dependencies.