CVE-2025-47951 json
Weblate lacks rate limiting when verifying second factor
published 2025-06-16 16 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-18400 , GHSA-57jg-m997-cx3q , PYSEC-2026-2039
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
Weblate is a web based localization tool. Prior to version 5.12, the verification of the second factor was not subject to rate limiting. The absence of rate limiting on the second factor endpoint allows an attacker with valid credentials to automate OTP guessing. This issue has been patched in version 5.12.
Patch / fix
- pypi weblate 5.12
- weblate weblate 5.12
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | weblate | <5.12 |
5.12 |
Affected products
- WeblateOrg weblate
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
github.com
/WeblateOrg/weblate/pull/14918
web, issue-tracking
-
github.com
/WeblateOrg/weblate/commit/f806293451248c5d95e45b3b507e9d158bc4f384
web, patch
-
github.com
/WeblateOrg/weblate/security/advisories/GHSA-57jg-m997-cx3q
web, vendor-advisory
-
hackerone.com
/reports/3150564
web, permissions-required
-
github.com
/WeblateOrg/weblate/releases/tag/weblate-5.12.1
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2025-47951
advisory
-
github.com
/WeblateOrg/weblate
package
-
pypi.org
/project/weblate
package
-
github.com
/advisories/GHSA-57jg-m997-cx3q
advisory
Sources
- CVE List CVE-2025-47951
- GitHub Advisory GHSA-57jg-m997-cx3q
- NVD CVE-2025-47951
- OSV PYSEC-2026-2039
Fencer Vulns 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.