Access Control Flaw in Weblate Affects Screenshot Security
CVE-2026-21889

2.3LOW

Key Information:

Vendor

Weblateorg

Status
Weblate
Vendor
CVE Published:
14 January 2026

What is CVE-2026-21889?

Weblate, a web-based localization tool, contains a vulnerability that allows unauthorized access to screenshot images served by the HTTP server. Versions prior to 5.15.2 lack proper access control mechanisms, enabling unauthenticated users to potentially access sensitive screenshots by merely guessing their filenames. This issue has been addressed in version 5.15.2, which implements the necessary security measures to prevent such unauthorized access.

Affected Version(s)

weblate < 5.15.2

References

https://github.com/WeblateOrg/weblate/security/advisories...
x_refsource_CONFIRM
https://github.com/WeblateOrg/weblate/pull/17516
x_refsource_MISC
https://github.com/WeblateOrg/weblate/commit/a6eb5fd02997...
x_refsource_MISC

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.