What is CVE-2026-21889?

CVE-2026-21889 is a high-severity vulnerability in Weblate, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-01-14.

How severe is CVE-2026-21889?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Weblate

CVE-2026-21889

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 fil…

EPSS: 0.003 (24.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weblate
Weblateorg Weblate — versions < 5.15.2

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Issue Tracking)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-21889?: CVE-2026-21889 is a high-severity vulnerability in Weblate, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-01-14.
How severe is CVE-2026-21889?: High severity. CVSS v3 base score is 7.5 out of 10.