CVE-2026-72730

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72730", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-10T13:48:09.546Z", "datePublished": "2026-08-10T16:17:04.710Z", "dateUpdated": "2026-08-10T18:34:18.500Z"}, "containers": {"cna": {"title": "Discourse: Stored XSS chat-transcript username unescaped in Rich Text Editor", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459"}, {"name": "https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf"}, {"name": "https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5"}, {"name": "https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea"}, {"name": "https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"version": "< 2026.1.6", "status": "affected"}, {"version": ">= 2026.5.0-latest, < 2026.5.2", "status": "affected"}, {"version": ">= 2026.6.0-latest, < 2026.6.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-10T16:17:04.710Z"}, "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."}], "source": {"advisory": "GHSA-wg48-qxjc-f459", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-10T18:33:59.495997Z", "id": "CVE-2026-72730", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-10T18:34:18.500Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72730", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-10T18:33:59.495997Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-10T18:34:14.345Z"}}], "cna": {"title": "Discourse: Stored XSS chat-transcript username unescaped in Rich Text Editor", "source": {"advisory": "GHSA-wg48-qxjc-f459", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"status": "affected", "version": "< 2026.1.6"}, {"status": "affected", "version": ">= 2026.5.0-latest, < 2026.5.2"}, {"status": "affected", "version": ">= 2026.6.0-latest, < 2026.6.1"}]}], "references": [{"url": "https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459", "name": "https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf", "name": "https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5", "name": "https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea", "name": "https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529", "name": "https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-10T16:17:04.710Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72730", "state": "PUBLISHED", "dateUpdated": "2026-08-10T18:34:18.500Z", "dateReserved": "2026-08-10T13:48:09.546Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-08-10T16:17:04.710Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "discourse", "vendor": "discourse", "versions": [{"status": "affected", "version": "< 2026.1.6"}, {"status": "affected", "version": ">= 2026.5.0-latest, < 2026.5.2"}, {"status": "affected", "version": ">= 2026.6.0-latest, < 2026.6.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."}], "id": "CVE-2026-72730", "lastModified": "2026-09-08T20:54:37.790", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72730", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-10T18:33:59.495997Z", "version": "2.0.3"}}]}, "published": "2026-08-10T17:17:37.507", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/32920affe4ad97b461ca2ae2f664c5fefc374baf"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/3fb1e8ead0d4f48d2cf55c8110825c7e8a6a45f5"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/7eb35d076ab9b6a612e86182336ce9787ce402ea"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/commit/9633b8ecaf5a99f0407f5261b9bd1a05f7dac529"}, {"source": "security-advisories@github.com", "url": "https://github.com/discourse/discourse/security/advisories/GHSA-wg48-qxjc-f459"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2026.1.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2026.5.0-latest,2026.5.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2026.6.0-latest,2026.6.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "discourse", "source": "cna", "vendor": "discourse"}, "product": "discourse", "vendor": "discourse"}], "created": "2026-08-10T18:00:03.741233+00:00", "updated": "2026-08-11T03:45:03.265489+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}