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Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups

Moderate severity GitHub Reviewed Published Jul 11, 2026 in WeblateOrg/weblate • Updated Aug 28, 2026

Package

pip weblate (pip)

Affected versions

< 2026.7

Patched versions

2026.7

Description

Impact

The several endpoints could leak object existence information to users who had no access to it by HTTP status code 403 instead of 404.

Patches

References

Thanks to Yaohui Wang for reporting this via GitHub.

References

@nijel nijel published to WeblateOrg/weblate Jul 11, 2026
Published by the National Vulnerability Database Aug 26, 2026
Published to the GitHub Advisory Database Aug 28, 2026
Reviewed Aug 28, 2026
Last updated Aug 28, 2026

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
Low
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:L/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.
(8th percentile)

Weaknesses

Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. Learn more on MITRE.

CVE ID

CVE-2026-55227

GHSA ID

GHSA-2p9g-x3cv-5hh4

Source code

Credits

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