Home/Vulnerability/CVE-2026-44785

CVE-2026-44785

Discourse: Hidden reply-to post raw can be disclosed through AI explain prompts

Published: Jun 12, 2026Updated: Jun 12, 2026 Sources: CVE List NVD

4.3CVSS

MEDIUM

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.

EPSS Score

N/A

CISA KEV

Not in KEV

Exploits

No Known Exploits

Remediation

No Fix Available

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:NIntegrity

None

A:NAvailability

None

Weaknesses

CWE-200

Affected Products

discourse

Web & CMS Plugins / forum-wiki

discoursecommercialUSWeb & CMS Pluginsaka discourse.org

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique

Collection

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References

https://github.com/discourse/discourse/security/advisories/GHSA-7h76-fwxc-j586

github.com

Timeline

Published

Jun 12, 2026

Last Updated

Jun 12, 2026

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Plain-language analysis

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