Weblate has a long session expiry when verifying second factor

Description

Impact

The verification of the second factor had too long a session expiry. The long session expiry could be used to circumvent rate limiting of the second factor.

Patches

This issue has been addressed in Weblate 5.13.1 via https://github.com/WeblateOrg/weblate/pull/16002.

References

Thanks to Nahid Hasan Limon for reporting this issue responsibly.

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-09-04 14:06:15 UTC
Updated
2025-09-05 16:10:50 UTC
GitHub reviewed
2025-09-04 14:06:15 UTC
NVD published
2025-09-04

EPSS Score

Score Percentile
0.05% 14.46%

CVSS Scores

Base score Version Severity Vector
2.1 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:H)
Exploitation depends on constrained or hard-to-reproduce conditions.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:P)
A user has to participate (for example click/open/approve).
Vulnerable system confidentiality impact (VC:L)
Limited confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:L)
Limited integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

CWEs

CWE id Name
CWE-613 Insufficient Session Expiration

Credits

  • nijel (remediation_developer)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
pip Weblate < 5.13.1 5.13.1

References

cvelogic Threat Intelligence