CVE-2026-21889 PUBLISHED

Weblate leaks information via screenshots

Assigner: GitHub_M
Reserved: 05.01.2026 Published: 14.01.2026 Updated: 14.01.2026

Weblate is a web based localization tool. Prior to 5.15.2, the screenshot images were served directly by the HTTP server without proper access control. This could allow an unauthenticated user to access screenshots after guessing their filename. This vulnerability is fixed in 5.15.2.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
CVSS Score: 2.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	High	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	WeblateOrg
Product	weblate
Versions	Version < 5.15.2 is affected

References

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-3g2f-4rjg-9385
https://github.com/WeblateOrg/weblate/pull/17516
https://github.com/WeblateOrg/weblate/commit/a6eb5fd0299780eca286be8ff187dc2d10feec47

Problem Types

CWE-284: Improper Access Control CWE