CVE-2025-66488
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Discourse allows script execution in uploaded HTML/XML files on S3
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
discourse
- Vendor
- discourse
- Product
- discourse
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| < 3.5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 2025.11.0-latest, < 2025.11.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 2025.12.0-latest, < 2025.12.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 2026.1.0-latest, < 2026.1.0 | affected | Unavailable | Unavailable | Unavailable | None listed |