CVE-2026-23866

{"id": "CVE-2026-23866", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23866", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-01T17:41:43.060585Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve-assign@fb.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve-assign@fb.com", "affectedData": [{"vendor": "Facebook", "product": "WhatsApp for Android", "versions": [{"status": "affected", "version": "2.25.8.0", "lessThan": "2.26.7.10", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Facebook", "product": "WhatsApp for iOS", "versions": [{"status": "affected", "version": "2.25.8.0", "lessThan": "2.26.15.72", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-01T16:16:29.980", "references": [{"url": "https://www.facebook.com/security/advisories/cve-2026-23866", "tags": ["Third Party Advisory"], "source": "cve-assign@fb.com"}, {"url": "https://www.whatsapp.com/security/advisories/2026", "tags": ["Vendor Advisory"], "source": "cve-assign@fb.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-940"}]}], "descriptions": [{"lang": "en", "value": "Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72 and WhatsApp for Android v2.25.8.0 to v2.26.7.10 could have allowed a user to trigger processing of media content from an arbitrary URL on another user\u2019s device, including triggering OS-controlled custom URL scheme handlers. We have not seen evidence of exploitation in the wild."}], "lastModified": "2026-06-17T10:22:13.670", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:*:*", "vulnerable": true, "matchCriteriaId": "A9F5775D-2CBD-427C-94CD-D01C11559B06", "versionEndIncluding": "2.26.7.10", "versionStartIncluding": "2.25.8.0"}, {"criteria": "cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*", "vulnerable": true, "matchCriteriaId": "9C83C05F-A88D-48B7-8DE8-5B8CBD9FC6B9", "versionEndIncluding": "2.26.15.72", "versionStartIncluding": "2.25.8.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve-assign@fb.com"}