CVE-2026-44785
Discourse: Hidden reply-to post raw can be disclosed through AI explain prompts
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
9th
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, the AI "explain" helper only checks can_see? on the post being explained, not its reply_to_post, so any authenticated user with access to the AI helper could read the raw contents of a hidden parent post by invoking "Explain" on a reply to it. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.
| CWE | CWE-200 |
| Vendor | discourse |
| Product | discourse |
| Published | Jun 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
discourse / discourse
>= 2026.1.0-latest, < 2026.1.4 >= 2026.3.0-latest, < 2026.3.1 >= 2026.4.0-latest, < 2026.4.1