Vulnerability · Published Jun 16, 2025 · Assigned by GitHub_M

CVE-2025-47951Weblate lacks rate limiting when verifying second factor

Medium 4.9

In plain English

A medium-severity security flaw in weblate from WeblateOrg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.3%top 81.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	weblate	5.12	GHSA-57jg-m997-cx3q
PyPI	weblate	5.12	PYSEC-2026-2039

Affected products (as reported)

Vendor	Product	Versions
WeblateOrg	weblate	< 5.12

Weakness: CWE-307 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

References

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-57jg-m997-cx3q x_refsource_CONFIRM
https://github.com/WeblateOrg/weblate/pull/14918 x_refsource_MISC
https://github.com/WeblateOrg/weblate/commit/f806293451248c5d95e45b3b507e9d158bc4f384 x_refsource_MISC
https://hackerone.com/reports/3150564 x_refsource_MISC
https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.12.1 x_refsource_MISC