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Vulnerabilities CVE-2026-41654

CVE-2026-41654

Medium
Open
TLP:CLEAR

Weblate is Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_repo_url

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Description

Weblate is a web based localization tool. Prior to version 5.17.1, an authenticated user with project.add permission (default on hosted Weblate SaaS and for any user holding an active billing/trial plan) can import a crafted project backup ZIP whose components/<name>.json contains an attacker-chosen repo URL pointing at a private address (e.g. http://127.0.0.1:9999/) or using a non-allow-listed scheme (e.g. file://, git://). Weblate persists the component via Component.objects.bulk_create([component])[0], which bypasses Django's full_clean() and therefore never runs the validate_repo_url validator. The URL is subsequently written verbatim into .git/config by configure_repo(pull=False). This issue has been patched in version 5.17.1.

Details

CVSS Score
5.3
EPSS Score
0.37%

30.2th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Confidence
90%
Published
May 7, 2026
Last Modified
May 8, 2026
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