CVE-2026-48780

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{"affected": [{"affectedData": [{"product": "forem", "vendor": "forem", "versions": [{"status": "affected", "version": "< a2ab6d4"}]}], "source": "security-advisories@github.com"}], "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": "2026-06-17T14:17:56.423", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48780", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-17T13:49:19.212215Z", "version": "2.0.3"}}]}, "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": "Secondary"}]}

{}

{"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": "2026-06-17T22:45:13.877057+00:00", "vendors": ["forem", "forem$PRODUCT$forem"]}