CVE-2026-39845

Weblate: SSRF via the webhook add-on using unprotected fetch_url()

State: Published
Severity: 4.1 Medium
Published: Apr 15, 2026
Updated: Apr 15, 2026
Reserved: Apr 7, 2026

Description

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 the webhook add-on as a workaround.

Scores

CVSS	Score	Vector	Source
3.1	4.1 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
weblateWeblateOrg	< 5.17Affected

References

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

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