CVE-2026-33423

LOW
2026-03-20 GitHub_M
1.3
CVSS 4.0

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Mar 20, 2026 - 23:16 vuln.today
CVE Published
Mar 20, 2026 - 23:06 nvd
LOW 1.3

Tags

Authentication Bypass

Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, staff can modify any user's group notification level. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Analysis

A privilege escalation vulnerability in Discourse allows staff members to arbitrarily modify group notification levels for any user without proper authorization checks. This affects Discourse versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, enabling authenticated staff users to alter notification settings for other users in ways they should not be permitted to do. …

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Remediation

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

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Priority Score

7
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +6
POC: 0

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CVE-2026-33423 vulnerability details – vuln.today
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