---
id: CVE-2025-47951
aliases:
  - GHSA-57jg-m997-cx3q
  - PYSEC-2026-2039
title: Weblate lacks rate limiting when verifying second factor
summary: Weblate lacks rate limiting when verifying second factor
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N'
vendor: weblate
product: weblate
ecosystem: pip
affected:
  - weblate < 5.12
patched:
  - weblate 5.12
published: '2025-06-16'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:24.898250056Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-57jg-m997-cx3q'
references:
  - url: >-
      https://github.com/WeblateOrg/weblate/security/advisories/GHSA-57jg-m997-cx3q
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-47951'
  - url: 'https://github.com/WeblateOrg/weblate/pull/14918'
  - url: >-
      https://github.com/WeblateOrg/weblate/commit/f806293451248c5d95e45b3b507e9d158bc4f384
  - url: 'https://hackerone.com/reports/3150564'
  - url: 'https://github.com/WeblateOrg/weblate'
  - url: 'https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.12.1'
tags:
  - osv
  - pip
epss: 0.00265
epssPercentile: 0.18697
ingestedAt: '2026-07-08T18:25:45.806Z'
---

## Overview

### 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).

## Affected packages

- `weblate < 5.12`

## Remediation

Upgrade to a patched release:

- `weblate 5.12`