CVE-2025-66488
Discourse is an open source discussion platform. A vulnerability present in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 affects anyone who uses S3 for uploads. While scripts may be executed, they will only be run in the context of the S3/CDN domain, with no site credentials. Versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 fix the issue. As a workaround, disallow html or xml files for uploads in authorized_extensions. For existing html xml uploads, site owners can consider deleting them.
Vendor
Product
CWE
Yayın Tarihi
2026-01-28 19:16:22
Güncelleme
2026-01-30 20:31:25
Source Identifier
security-advisories@github.com
KEV Date Added
-