CVE-2026-72720

{"id": "CVE-2026-72720", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72720", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-10T18:13:33.296372Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "discourse", "product": "discourse", "versions": [{"status": "affected", "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"}]}]}], "published": "2026-08-10T16:19:49.197", "references": [{"url": "https://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130323485f", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e9517a11", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5fdabd75", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68338ea16", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/pull/42244", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/pull/42245", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/pull/42246", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/pull/42247", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "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."}], "lastModified": "2026-09-08T20:54:37.790", "sourceIdentifier": "security-advisories@github.com"}