CVE-2026-55227 json
Observable object existence disclosure in private Weblate projects via globally scoped object lookups
published 2026-08-26 2 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-66712 , GHSA-2p9g-x3cv-5hh4 , PYSEC-2026-3941
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.
Patch / fix
- pypi weblate 2026.7
- weblate weblate 2026.7
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | weblate | <2026.7 |
2026.7 |
Affected products
- WeblateOrg weblate
Classification
- Weakness
-
- CWE-203 Observable Discrepancy
References
-
github.com
/WeblateOrg/weblate/commit/836bc082803d49d02f2831ec8339268eb66bcdae
web
-
github.com
/WeblateOrg/weblate/pull/19971
web
-
github.com
/WeblateOrg/weblate/security/advisories/GHSA-2p9g-x3cv-5hh4
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-55227
advisory
-
github.com
/WeblateOrg/weblate
package
-
github.com
/WeblateOrg/weblate/releases/tag/weblate-2026.7
web
-
pypi.org
/project/weblate
package
-
github.com
/advisories/GHSA-2p9g-x3cv-5hh4
advisory
Sources
- CVE List CVE-2026-55227
- GitHub Advisory GHSA-2p9g-x3cv-5hh4
- NVD CVE-2026-55227
- OSV PYSEC-2026-3941
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.