CVE-2025-47951: weblate Brute Force — Fix

Description

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.

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CVSS v3.1 Score

4.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-307 CWE-307

Affected Products

Vendor	Product	Versions
weblate	weblate	< 5.12

References

Advisories & Patches

https://github.com/WeblateOrg/weblate/commit/f806293451248c5d95e45b3b507e9d158bc4f384 https://github.com/WeblateOrg/weblate/security/advisories/GHSA-57jg-m997-cx3q

Other References

https://github.com/WeblateOrg/weblate/pull/14918 https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.12.1 https://hackerone.com/reports/3150564

Frequently Asked Questions

What is CVE-2025-47951? +

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. It has a CVSS v3.1 base score of 4.9 (MEDIUM).

How severe is CVE-2025-47951? +

CVE-2025-47951 has a CVSS v3.1 score of 4.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-47951? +

CVE-2025-47951 affects products from weblate, specifically: weblate. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-47951? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-47951