RCE in Weblate
CVE-2026-33435
Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.009 · change: +0.002
Affected products
- Weblate
- Weblateorg Weblate — versions < 5.17
Weakness classification (CWE)
References
- github.com/WeblateOrg/weblate/security/advisories/GHSA-558g-h753-6m33 (Third Party Advisory)
- github.com/WeblateOrg/weblate/pull/18549 (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2026-33435?
- CVE-2026-33435 is a high-severity vulnerability in Weblate, classified under Relative Path Traversal. CVSS score: 8.0/10. Published 2026-04-15.
- How severe is CVE-2026-33435?
- High severity. CVSS v3 base score is 8.0 out of 10.