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CVE-2026-33291

MEDIUM CVSS 4.0: 5.1 EPSS 0.03%
Updated Mar 24, 2026
Discourse
Parameter Value
CVSS 5.1 (MEDIUM)
Affected Versions 2026.1.0 — 2026.2.1
Fixed In 2026.1.2
Type CWE-863 (Incorrect Authorization)
Vendor Discourse
Public PoC No

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, moderators can create Zendesk tickets for topics they do not have access to view. This affects all forums that use the Zendesk plugin.

Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Discourse Discourse
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
2026.1.0 2026.1.2
Discourse Discourse
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
2026.2.0 2026.2.1
Discourse Discourse
cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*