Is there a patch available for CVE-2026-33074?

Yes, a patch is available for CVE-2026-33074. Update the affected software to the latest version immediately.

Discourse CVE-2026-33074

Q: What is the CVSS score of CVE-2026-33074?

CVE-2026-33074 has a CVSS 4.0 base score of 6.3 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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. EPSS exploitation probability: 0.0%.

EUVD-2026-17569 MEDIUM

Improper Privilege Management (CWE-269)

2026-03-31 GitHub_M

Privilege Escalation Discourse

6.3

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.3 MEDIUM

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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

High

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

2026.2.2,2026.1.3,2026.3.0

EUVD ID Assigned

Mar 31, 2026 - 18:16 euvd

EUVD-2026-17569

Analysis Generated

Mar 31, 2026 - 18:16 vuln.today

CVE Published

Mar 31, 2026 - 17:41 nvd

MEDIUM 6.3

DescriptionGitHub Advisory

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, a user may be able to purchase a lower tier subscription but grant themselves the benefits that comes along with a higher tier subscription. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

AnalysisAI

Discourse versions 2026.1.0-2026.1.2, 2026.2.0-2026.2.1, and 2026.3.0-pre allow authenticated users to escalate their subscription tier by purchasing a lower-cost plan while obtaining benefits reserved for higher-tier subscriptions. The vulnerability has a CVSS 6.3 score reflecting the integrity impact, requires high attack complexity and partial timing conditions, but affects confidentiality minimally. …

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Vulnerability AssessmentAI

Risk Assessment	The CVSS 4.0 vector (AV:N AC:H AT:P PR:N UI:N VC:N VI:L VA:N) indicates remote network-based attack with high complexity, partial attack time, and no user interaction required. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker with network access to a Discourse instance identifies the subscription purchase workflow and discovers that tier benefits are granted via a separate, insufficiently-protected call. The attacker purchases a lower-cost subscription plan and, during a specific timing window or via direct parameter manipulation, triggers the benefit-grant endpoint to assign higher-tier benefits. …
Remediation	Vendor-released patches: Upgrade Discourse to version 2026.1.3 or later for the 2026.1 branch, version 2026.2.2 or later for the 2026.2 branch, or version 2026.3.0 or later for the 2026.3 branch. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-33074 vulnerability details – vuln.today

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