CVE-2026-44785 json
Discourse: Hidden reply-to post raw can be disclosed through AI explain prompts
published 4mo ago modified 2mo ago also BIT-discourse-2026-44785 , EUVD-2026-36557 , GHSA-7h76-fwxc-j586
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami discourse 2026.1.4, 2026.3.1, 2026.4.1
- discourse discourse 2026.1.4, 2026.3.1, 2026.4.1
Is CVE-2026-44785 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | >=2026.1.0, <2026.1.4 >=2026.3.0, <2026.3.1 >=2026.4.0, <2026.4.1 |
2026.1.4 2026.3.1 2026.4.1 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/discourse/discourse/security/advisories/GHSA-7h76-fwxc-j586
third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44785
web
Sources
- CVE List CVE-2026-44785
- NVD CVE-2026-44785
- OSV BIT-discourse-2026-44785
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.