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{"cveTags": [], "descriptions": [{"lang": "en", "value": "An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information."}], "id": "CVE-2026-4893", "lastModified": "2026-05-11T18:16:41.593", "metrics": {}, "published": "2026-05-11T18:16:41.593", "references": [{"source": "cret@cert.org", "url": "https://thekelleys.org.uk/dnsmasq/"}, {"source": "cret@cert.org", "url": "https://www.kb.cert.org/vuls/id/471747"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.93"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "dnsmasq", "source": "cna", "vendor": "dnsmasq"}, "product": "dnsmasq", "vendor": "dnsmasq"}], "created": "2026-05-11T18:45:25.408156+00:00", "title": "Remote Information Disclosure via RFC 7871 Client Subnet in dnsmasq", "updated": "2026-05-11T18:45:25.663433+00:00", "vendors": ["dnsmasq", "dnsmasq$PRODUCT$dnsmasq"], "weaknesses": ["CWE-200"]}