{"api_version":"1","generated_at":"2026-06-24T17:20:08+00:00","cve":"CVE-2026-44786","urls":{"html":"https://cve.report/CVE-2026-44786","api":"https://cve.report/api/cve/CVE-2026-44786.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-44786","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-44786"},"summary":{"title":"Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus subscriber without chat enabled could receive chat message payloads in real time. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-06-12 21:16:22","updated_at":"2026-06-17 18:46:46"},"problem_types":["CWE-200","CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-j7wq-rf5c-8783","name":"https://github.com/discourse/discourse/security/advisories/GHSA-j7wq-rf5c-8783","refsource":"security-advisories@github.com","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44786","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44786","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"discourse","product":"discourse","version":"affected >= 2026.1.0-latest, < 2026.1.4","platforms":[]},{"source":"CNA","vendor":"discourse","product":"discourse","version":"affected >= 2026.3.0-latest, < 2026.3.1","platforms":[]},{"source":"CNA","vendor":"discourse","product":"discourse","version":"affected >= 2026.4.0-latest, < 2026.4.1","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"44786","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"44786","cve":"CVE-2026-44786","epss":"0.002450000","percentile":"0.153780000","score_date":"2026-06-22","updated_at":"2026-06-23 00:09:30"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-44786","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-06-15T16:06:00.523976Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-06-15T16:06:11.443Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"discourse","vendor":"discourse","versions":[{"status":"affected","version":">= 2026.1.0-latest, < 2026.1.4"},{"status":"affected","version":">= 2026.3.0-latest, < 2026.3.1"},{"status":"affected","version":">= 2026.4.0-latest, < 2026.4.1"}]}],"descriptions":[{"lang":"en","value":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus subscriber without chat enabled could receive chat message payloads in real time. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-12T20:22:06.193Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-j7wq-rf5c-8783","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-j7wq-rf5c-8783"}],"source":{"advisory":"GHSA-j7wq-rf5c-8783","discovery":"UNKNOWN"},"title":"Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-44786","datePublished":"2026-06-12T20:22:06.193Z","dateReserved":"2026-05-07T19:20:44.691Z","dateUpdated":"2026-06-15T16:06:11.443Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-12 21:16:22","lastModifiedDate":"2026-06-17 18:46:46","problem_types":["CWE-200","CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-15T16:06:00.523976Z","id":"CVE-2026-44786","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*","versionEndExcluding":"2026.1.0","matchCriteriaId":"C4B2317D-D085-4564-8D41-AD4EBA6F61BF"},{"vulnerable":true,"criteria":"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*","versionStartIncluding":"2026.1.0","versionEndExcluding":"2026.1.4","matchCriteriaId":"E82B178E-8F1C-4AD6-A18A-649091C3BCFE"},{"vulnerable":true,"criteria":"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*","versionStartIncluding":"2026.3.0","versionEndExcluding":"2026.3.1","matchCriteriaId":"53A8996E-FEBF-43B0-92E6-38ECC9381013"},{"vulnerable":true,"criteria":"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*","versionStartIncluding":"2026.4.0","versionEndExcluding":"2026.4.1","matchCriteriaId":"CD3531A1-E4CB-42E5-BEE0-80C443DBEDEE"},{"vulnerable":true,"criteria":"cpe:2.3:a:discourse:discourse:2026.5.0:*:*:*:latest:*:*:*","matchCriteriaId":"8AD4BB38-1D03-4ECD-BFAB-900D57689A31"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"44786","Ordinal":"1","Title":"Discourse: Public chat MessageBus broadcasts are not restricted ","CVE":"CVE-2026-44786","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"44786","Ordinal":"1","NoteData":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus subscriber without chat enabled could receive chat message payloads in real time. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.","Type":"Description","Title":"Discourse: Public chat MessageBus broadcasts are not restricted "}]}}}