Information Disclosure Vulnerability in Discourse Open-Source Platform
CVE-2026-44785

4.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
12 June 2026

What is CVE-2026-44785?

Discourse, an open-source discussion platform, contains a vulnerability in its AI 'explain' feature, allowing authenticated users to access the content of hidden parent posts through replies. The AI helper does not sufficiently verify permissions on the original post, exposing sensitive information. This issue affects specific versions and has been addressed in later updates to ensure user data is securely managed.

Affected Version(s)

discourse >= 2026.1.0-latest, < 2026.1.4 < 2026.1.0-latest, 2026.1.4

discourse >= 2026.3.0-latest, < 2026.3.1 < 2026.3.0-latest, 2026.3.1

discourse >= 2026.4.0-latest, < 2026.4.1 < 2026.4.0-latest, 2026.4.1

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.