CVE-2026-55227: CWE-203: Observable Discrepancy in WeblateOrg weblate
Description
Weblate versions prior to 2026.7 have an information disclosure vulnerability where unauthorized users can infer the existence of objects in private projects due to differing HTTP response codes (403 vs 404). This discrepancy allows attackers to confirm whether certain objects exist without access. The issue is fixed in version 2026.7.
CVSS v3.1
Score 4.3medium
Affected software
WeblateOrg
weblate
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Weblate is a web-based localization tool. In versions before 2026.7, some endpoints perform object lookups globally rather than restricting them to projects accessible by the user. When an unauthorized user requests an object they cannot access, the server returns HTTP 403 (Forbidden) instead of HTTP 404 (Not Found). This observable difference enables unauthorized users to infer the existence of objects in private projects. The vulnerability is identified as CWE-203 (Observable Discrepancy). The issue has been resolved in Weblate version 2026.7.
Potential Impact
The vulnerability allows unauthorized users to confirm the existence of objects in private Weblate projects by observing HTTP response codes. This information disclosure does not expose the content of the objects but leaks metadata about private project contents. There is no impact on integrity or availability.
Mitigation Recommendations
Upgrade Weblate to version 2026.7 or later, where this issue has been fixed. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T16:16:32.628Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8f559dacd9273b4963337f
Added to database: 08/26/2026, 21:07:41 UTC
Last enriched: 09/10/2026, 09:54:18 UTC
Last updated: 10/09/2026, 06:48:18 UTC
Views: 80
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