CVE-2025-47951
Weblate lacks rate limiting when verifying second factor
4.9
MEDIUM
CVSS 3.1
EPSS 0.20%
Description
### Impact 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. ### Patches This issue has been addressed in Weblate 5.12 via https://github.com/WeblateOrg/weblate/pull/14918. ### References Thanks to [obscuredeer](https://hackerone.com/obscuredeer) for reporting this [issue at HackerOne](https://hackerone.com/reports/3150564).
How to fix CVE-2025-47951
To remediate CVE-2025-47951, upgrade the affected package to a fixed version below.
- —upgrade to 5.12 or later
Is CVE-2025-47951 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 5.12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |