CVE-2026-39845

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (2)

Core 2
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/WeblateOrg/weblate/pull/18815

Scores

CVSS v3 4.1
EPSS 0.0027
EPSS Percentile 19.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (4)
pypi/weblate 0 - 5.17PyPI
pypi/Weblate 0 - 5.17PyPI
weblate/weblate < 5.17
WeblateOrg/weblate < 5.17
Published Apr 15, 2026
Tracked Since Apr 16, 2026