CVE-2026-30913

{"id": "CVE-2026-30913", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.6, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.1}]}, "published": "2026-03-10T17:40:15.210", "references": [{"url": "https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25", "source": "security-advisories@github.com"}, {"url": "https://github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28", "source": "security-advisories@github.com"}, {"url": "https://github.com/flarum/nicknames/releases/tag/v1.8.", "source": "security-advisories@github.com"}, {"url": "https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Flarum is open-source forum software. When the flarum/nicknames extension is enabled, a registered user can set their nickname to a string that email clients interpret as a hyperlink. The nickname is inserted verbatim into plain-text notification emails, and recipients may be misled into visiting attacker-controlled domains."}, {"lang": "es", "value": "Flarum es un software de foro de c\u00f3digo abierto. Cuando la extensi\u00f3n flarum/nicknames est\u00e1 habilitada, un usuario registrado puede establecer su apodo a una cadena que los clientes de correo electr\u00f3nico interpretan como un hiperv\u00ednculo. El apodo se inserta textualmente en los correos electr\u00f3nicos de notificaci\u00f3n de texto sin formato, y los destinatarios pueden ser enga\u00f1ados para que visiten dominios controlados por el atacante."}], "lastModified": "2026-04-29T20:49:53.037", "sourceIdentifier": "security-advisories@github.com"}