What is CVE-2026-55227?

CVE-2026-55227 is a medium-severity vulnerability in Weblateorg Weblate, classified under Observable Discrepancy. CVSS score: 4.3/10. Published 2026-08-26.

How severe is CVE-2026-55227?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Weblateorg Weblate

CVE-2026-55227

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.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weblateorg Weblate — versions < 2026.7

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-55227?: CVE-2026-55227 is a medium-severity vulnerability in Weblateorg Weblate, classified under Observable Discrepancy. CVSS score: 4.3/10. Published 2026-08-26.
How severe is CVE-2026-55227?: Medium severity. CVSS v3 base score is 4.3 out of 10.