Is there a patch available for CVE-2026-32620?

Yes, a patch is available for CVE-2026-32620. Update the affected software to the latest version immediately.

Discourse CVE-2026-32620

Q: What is the CVSS score of CVE-2026-32620?

CVE-2026-32620 has a CVSS 4.0 base score of 5.3 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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-2026-17559 MEDIUM

Information Exposure (CWE-200)

2026-03-31 GitHub_M

Information Disclosure Discourse

5.3

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.3 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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:L/AT:N/PR:L/UI:N/VC:L/VI:N/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

Low

Privileges Required

Low

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-2026-17559

Analysis Generated

Mar 31, 2026 - 18:16 vuln.today

CVE Published

Mar 31, 2026 - 17:41 nvd

MEDIUM 5.3

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, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content was exposed, only metadata about who read the post and when. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

AnalysisAI

Discourse versions 2026.1.0 through 2026.1.2, 2026.2.0 through 2026.2.1, and 2026.3.0 leak read receipt metadata (who read staff-only posts and when) to non-staff users who should not have access to that information. While no post content is exposed, the metadata disclosure violates intended access controls. …

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Vulnerability AssessmentAI

Risk Assessment	The CVSS 5.3 score reflects low confidentiality impact (VC:L) via network attack (AV:N) with low complexity (AC:L) requiring authenticated access (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A non-staff user with a legitimate account on a Discourse instance logs in and crafts API or UI requests to retrieve read receipt data for staff-only posts in categories they cannot access. By enumerating post identifiers or leveraging information leakage from search results, the attacker discovers which staff members have viewed sensitive discussions and when, potentially exposing internal decision-making timelines or staff activity patterns. …
Remediation	Upgrade Discourse to version 2026.1.3, 2026.2.2, or 2026.3.0 or later, depending on which release branch is in use. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-32620 vulnerability details – vuln.today

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