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Weblate: Improper access control for pending tasks in API

Low severity GitHub Reviewed Published Apr 15, 2026 in WeblateOrg/weblate

Package

pip weblate (pip)

Affected versions

< 5.17

Patched versions

5.17

Description

Impact

The API for tasks didn't verify user access for pending tasks. This could expose logs of in-progress operations to users who don't have access to given scope.

Patches

Workarounds

The attacker needs to guess the random UUID of the task, so exploiting this is unlikely with the default API rate limits.

References

This issue was identified by Michal Čihař.

References

@nijel nijel published to WeblateOrg/weblate Apr 15, 2026
Published by the National Vulnerability Database Apr 15, 2026
Published to the GitHub Advisory Database Apr 16, 2026
Reviewed Apr 16, 2026

Severity

Low

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
Unchanged
Confidentiality
Low
Integrity
None
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:U/C:L/I:N/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

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Learn more on MITRE.

CVE ID

CVE-2026-33212

GHSA ID

GHSA-vj45-x3pj-f4w4

Source code

Credits

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