CVE-2026-34393: Weblate: Privilege escalation in the user API endpoint

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-15 · updated 2026-10-26
Weakness: CWE-269

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.

Affected products

WeblateOrg weblate: before 5.17 — fixed in 5.17

How to fix

Upgrade to a fixed version: WeblateOrg weblate 5.17. Check the vendor advisory for mitigations.

References

https://github.com/WeblateOrg/weblate/pull/18687
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-3382-gw9x-477v

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