What is CVE-2026-39845?

CVE-2026-39845 is a medium-severity vulnerability in Weblateorg Weblate, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.1/10. Published 2026-04-15.

How severe is CVE-2026-39845?

Medium severity. CVSS v3 base score is 4.1 out of 10.

SSRF in Weblateorg Weblate

CVE-2026-39845

Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.

Affected products

Weblateorg Weblate — versions < 5.17

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-f8hv-g549-hwg2 (x_refsource_CONFIRM)
https://github.com/WeblateOrg/weblate/pull/18815 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-39845?: CVE-2026-39845 is a medium-severity vulnerability in Weblateorg Weblate, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.1/10. Published 2026-04-15.
How severe is CVE-2026-39845?: Medium severity. CVSS v3 base score is 4.1 out of 10.