What is CVE-2026-34393?

CVE-2026-34393 is a high-severity vulnerability in Weblateorg Weblate, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-04-15.

How severe is CVE-2026-34393?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in Weblateorg Weblate

CVE-2026-34393

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.

Vulnerability class: Privilege Escalation

EPSS: 0.000 (3.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weblateorg Weblate — versions < 5.17

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

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

Frequently asked questions

What is CVE-2026-34393?: CVE-2026-34393 is a high-severity vulnerability in Weblateorg Weblate, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-04-15.
How severe is CVE-2026-34393?: High severity. CVSS v3 base score is 8.8 out of 10.