{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72720", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-10T13:48:09.545Z", "datePublished": "2026-08-10T15:41:51.764Z", "dateUpdated": "2026-08-10T18:17:21.640Z"}, "containers": {"cna": {"title": "Discourse: HTML injection in PrettyText.format_for_email from cooked-attribute reparsing", "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": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v"}, {"name": "https://github.com/discourse/discourse/pull/42244", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42244"}, {"name": "https://github.com/discourse/discourse/pull/42245", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42245"}, {"name": "https://github.com/discourse/discourse/pull/42246", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42246"}, {"name": "https://github.com/discourse/discourse/pull/42247", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42247"}, {"name": "https://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130323485f", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130323485f"}, {"name": "https://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e9517a11", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e9517a11"}, {"name": "https://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5fdabd75", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5fdabd75"}, {"name": "https://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68338ea16", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68338ea16"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"version": "< 2026.1.7", "status": "affected"}, {"version": ">= 2026.6.0-latest, < 2026.6.2", "status": "affected"}, {"version": ">= 2026.7.0-latest, < 2026.7.1", "status": "affected"}, {"version": ">= 2026.8.0-latest, < 2026.8.0-latest.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-10T15:41:51.764Z"}, "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and hashtag data-slug values can cause decoded attribute text to be reinterpreted as HTML. The vulnerable conversion also fails to strictly validate the Vimeo iframe host and path, allowing non-Vimeo allowlisted iframes to be converted. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1."}], "source": {"advisory": "GHSA-3q6f-6gm9-m35v", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-10T18:13:33.296372Z", "id": "CVE-2026-72720", "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": "2026-08-10T18:17:21.640Z"}}]}}

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