High severity · published Apr 15, 2026
CVE-2026-33435
Weblate: Remote code execution during backup restoration
8.0
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
weblate · WeblateOrg
< 5.17 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33435
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33435
Issue Tracking
https://github.com/WeblateOrg/weblate/pull/18549
Third Party Advisory
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-558g-h753-6m33
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