High severity · published Apr 15, 2026
CVE-2026-34393
Weblate: Privilege escalation in the user API endpoint
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% 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-2026-34393
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34393
Issue Tracking
https://github.com/WeblateOrg/weblate/pull/18687
Third Party Advisory
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-3382-gw9x-477v
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