CVE-2026-34393 json
Weblate: Privilege escalation in the user API endpoint
published 6mo ago modified 14d ago also EUVD-2026-23005 , GHSA-3382-gw9x-477v , PYSEC-2026-155
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2026-34393 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | weblate | <5.17 |
5.17 |
Affected products
- WeblateOrg weblate
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
github.com
/WeblateOrg/weblate/pull/18687
web, issue-tracking, patch
-
github.com
/WeblateOrg/weblate/security/advisories/GHSA-3382-gw9x-477v
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-34393
advisory
-
github.com
/WeblateOrg/weblate
package
-
github.com
/pypa/advisory-database/tree/main/vulns/weblate/PYSEC-2026-155.yaml
web
Sources
- CVE List CVE-2026-34393
- GitHub Advisory GHSA-3382-gw9x-477v
- NVD CVE-2026-34393
- OSV PYSEC-2026-155
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.