GitHub Advisoryadvisory · PyPI

GHSA-xrwr-fcw6-fmq8 Weblate: SSRF via Project-Level Machinery Configuration

MEDIUM Published 2026-04-16 Modified 2026-04-16 Official page ↗
Aliases
CVE-2026-34244
Ecosystem
PyPI
Packages
weblate
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Weaknesses
CWE-200, CWE-918
Reviewed
2026-04-16

Affected packages

• PyPI weblate: < 5.17 → fixed in 5.17

Description

Impact A user with the `project.edit` permission (granted by the per-project "Administration" role) can configure machine translation service URLs pointing to arbitrary internal network addresses. During configuration validation, Weblate makes an HTTP request to the attacker-controlled URL and reflects up to 200 characters of the response body back to the user in an error message. This constitutes a Server-Side Request Forgery (SSRF) with partial response read. Patches • https://github.com/WeblateOrg/weblate/pull/18684 • The solution then has been cleaned up in followup patches Workarounds Limiting available machinery services via WEBLATE_MACHINERY setting can avoid this. References Thanks to @DavidCarliez for disclosing this via GitHub private vulnerability reporting.

Related

Alias · CVE (1)

  • CVE-2026-34244 Weblate is a web based localization tool. vulnerability

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-918 Server-Side Request Forgery weakness

References