{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32951", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T00:05:53.285Z", "datePublished": "2026-03-31T17:41:20.559Z", "dateUpdated": "2026-04-01T18:33:42.891Z"}, "containers": {"cna": {"title": "Discourse: Authorization bypass in oneboxer via user-controlled category id", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-v93g-8f4f-4rgm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-v93g-8f4f-4rgm"}, {"name": "https://github.com/discourse/discourse/commit/0b4e6ff170362823d1cfe2a1a096785d0d77ee83", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/0b4e6ff170362823d1cfe2a1a096785d0d77ee83"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"version": ">= 2026.1.0-latest, < 2026.1.3", "status": "affected"}, {"version": ">= 2026.2.0-latest, < 2026.2.2", "status": "affected"}, {"version": ">= 2026.3.0-latest, < 2026.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-31T17:41:20.559Z"}, "descriptions": [{"lang": "en", "value": "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, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a category_id parameter matching the shared drafts category. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0."}], "source": {"advisory": "GHSA-v93g-8f4f-4rgm", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-01T18:33:36.140649Z", "id": "CVE-2026-32951", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-01T18:33:42.891Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2026.1.0-latest,2026.1.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2026.2.0-latest,2026.2.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2026.3.0-latest,2026.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "discourse", "source": "cna", "vendor": "discourse"}, "product": "discourse", "vendor": "discourse"}], "analysis": {"en": {"generated_at": "2026-03-31T19:36:44.342283+00:00", "value": {"mitigation_remediation": ["Update Discourse to the patched versions: 2026.1.3, 2026.2.2, or 2026.3.0."], "summary": {"action": "Apply Patch", "impact": "Confidentiality Disclosure"}, "threat_synthesis": {"affected_systems": "Discourse mobile and web platform 2026.1.0\u2011latest to before 2026.1.3, 2026.2.0\u2011latest to before 2026.2.2, 2026.3.0\u2011latest to before 2026.3.0 are affected. Versions 2026.1.3, 2026.2.2, and 2026.3.0 contain the fix.", "description_and_impact": "The vulnerability allows an authenticated user to read shared draft topic titles by crafting an inline onebox request with a category_id that points to the shared drafts category. Because the request bypasses proper authorization checks, the attacker can view content that should be hidden. This is a confidentiality breach and is classified under CWE-200 \u2013 Information Exposure.", "risk_and_exploitability": "The CVSS base score of 4.3 indicates moderate severity. The vulnerability requires the user to be authenticated, which is a precondition that limits exploitability. No public exploit was published, and the vulnerability is not in the CISA KEV catalog. An attacker can likely trigger the vulnerability by sending a crafted onebox request through the web interface or API once authenticated."}}}}, "created": "2026-03-31T19:53:39.138099+00:00", "updated": "2026-03-31T20:37:34.462601+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}