{"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": "2026-06-16T14:10:27.047Z"}, "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-48780", "lastModified": "2026-06-16T15:46:16.230", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-06-16T15:16:41.640", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/forem/forem/commit/a2ab6d409d2676eb0711ecbd737192043125b437"}, {"source": "security-advisories@github.com", "url": "https://github.com/forem/forem/security/advisories/GHSA-3g4h-9h37-mpx6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,a2ab6d4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "forem", "source": "cna", "vendor": "forem"}, "product": "forem", "vendor": "forem"}], "created": "2026-06-16T16:30:16.701209+00:00", "updated": "2026-06-16T16:30:16.701264+00:00", "vendors": ["forem", "forem$PRODUCT$forem"]}