CVE-2026-33440: Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads

April 16, 2026

The ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn’t restrict possible redirects.

References

github.com/WeblateOrg/weblate
github.com/WeblateOrg/weblate/commit/8be80625a864c8db5854503872a65e8a0b7399a6
github.com/WeblateOrg/weblate/pull/18550
github.com/WeblateOrg/weblate/security/advisories/GHSA-5fhx-9jwj-867m
github.com/advisories/GHSA-5fhx-9jwj-867m
nvd.nist.gov/vuln/detail/CVE-2026-33440

Code Behaviors & Features

Detect and mitigate CVE-2026-33440 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →