{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48780","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-22T20:18:20.365Z","datePublished":"2026-06-16T14:10:27.047Z","dateUpdated":"2026-06-17T13:49:28.484Z"},"containers":{"cna":{"title":"Forem vulnerable to bypass of email address domain restrictions","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/forem/forem/security/advisories/GHSA-3g4h-9h37-mpx6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/forem/forem/security/advisories/GHSA-3g4h-9h37-mpx6"},{"name":"https://github.com/forem/forem/commit/a2ab6d409d2676eb0711ecbd737192043125b437","tags":["x_refsource_MISC"],"url":"https://github.com/forem/forem/commit/a2ab6d409d2676eb0711ecbd737192043125b437"}],"affected":[{"vendor":"forem","product":"forem","versions":[{"version":"< a2ab6d4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-16T14:10:27.047Z"},"descriptions":[{"lang":"en","value":"Forem is open source software for building communities. Prior to commit a2ab6d4, a maliciously crafted email address could allow an attacker to bypass domain allowlist or denylist restrictions and gain access to invite-only forem deployments. The issue is patched as of `a2ab6d4`. As a workaround, some SMTP servers and email delivery providers may drop or refuse to send maliciously crafted email addresses."}],"source":{"advisory":"GHSA-3g4h-9h37-mpx6","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-17T13:49:19.212215Z","id":"CVE-2026-48780","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-06-17T13:49:28.484Z"}}]}}