Skip to content

Weblate lacks rate limiting when verifying second factor

Moderate severity GitHub Reviewed Published Jun 16, 2025 in WeblateOrg/weblate • Updated Jun 17, 2025

Package

pip weblate (pip)

Affected versions

< 5.12

Patched versions

5.12

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 WeblateOrg/weblate#14918.

References

Thanks to obscuredeer for reporting this issue at HackerOne.

References

@nijel nijel published to WeblateOrg/weblate Jun 16, 2025
Published to the GitHub Advisory Database Jun 16, 2025
Reviewed Jun 16, 2025
Published by the National Vulnerability Database Jun 16, 2025
Last updated Jun 17, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(7th percentile)

Weaknesses

CVE ID

CVE-2025-47951

GHSA ID

GHSA-57jg-m997-cx3q

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.