{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27935", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-25T03:11:36.689Z", "datePublished": "2026-03-19T21:33:38.459Z", "dateUpdated": "2026-03-19T21:33:38.459Z"}, "containers": {"cna": {"title": "Discourse leaks private topic metadata to non-authorized users", "problemTypes": [{"descriptions": [{"cweId": "CWE-201", "lang": "en", "description": "CWE-201: Insertion of Sensitive Information Into Sent Data", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76"}, {"name": "https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc"}, {"name": "https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897"}, {"name": "https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"version": ">= 2026.1.0-latest, < 2026.1.2", "status": "affected"}, {"version": ">= 2026.2.0-latest, < 2026.2.1", "status": "affected"}, {"version": "= 2026.3.0-latest", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-19T21:33:38.459Z"}, "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available."}], "source": {"advisory": "GHSA-wxqr-r4wv-cw76", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available."}], "id": "CVE-2026-27935", "lastModified": "2026-03-20T13:39:46.493", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-19T22:16:30.997", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.1.0-latest,2026.1.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.2.0-latest,2026.2.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2026.3.0-latest"}}], "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": "2026-03-19T22:50:44.896242+00:00", "value": {"mitigation_remediation": ["Upgrade Discourse to version 2026.3.0\u2011latest.1, 2026.2.1, or 2026.1.2 to apply the security patch."], "summary": {"action": "Apply Patch", "impact": "Information Disclosure"}, "threat_synthesis": {"affected_systems": "The affected vendor is Discourse (product discourse). Versions released before 2026.3.0\u2011latest.1, 2026.2.1, and 2026.1.2 contain the vulnerability; the patch is included in those releases.", "description_and_impact": "Discourse, an open\u2011source discussion platform, contains an API endpoint that unintentionally exposes private topic metadata of admin users to moderator users. This leads to unauthorized visibility of privileged information. The weakness is classified as CWE-201 (Information Exposure).", "risk_and_exploitability": "The CVSS score for this issue is 6.9, indicating medium severity information disclosure. No EPSS score is available and the vulnerability is not listed in the CISA KEV catalog, suggesting it has not been widely exploited yet. The likely attack vector is inferred: a user with moderator credentials can access the vulnerable API endpoint to retrieve admin\u2011level metadata. Since no workaround is reported, the primary mitigation is to upgrade to one of the patched releases."}}}}, "created": "2026-03-20T08:55:33.653273+00:00", "updated": "2026-03-20T11:05:56.157760+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}