{"vulnerability": "cve-2026-45034", "sightings": [{"uuid": "ee626111-bdd8-494b-9b81-1def44e7ca1b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-45034", "type": "seen", "source": "https://infosec.exchange/users/offseq/statuses/116795769618912715", "content": "CVE-2026-45034: CRITICAL deserialization of untrusted data in PHPOffice PhpSpreadsheet allows RCE via phar stream wrappers. Patch to 1.30.5 to mitigate. PHP 7.x at highest risk. https://radar.offseq.com/threat/cve-2026-45034-cwe-502-deserialization-of-untruste-7ddc5d39407c5a37 #OffSeq #CVE202645034 #PHP #infosec", "creation_timestamp": "2026-06-22T21:00:13.828042Z"}, {"uuid": "19914a5b-d16d-4264-95e6-87e957b98592", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-45034", "type": "published-proof-of-concept", "source": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-87m4-826x-3crx", "content": "", "creation_timestamp": "2026-06-07T04:04:34.000000Z"}, {"uuid": "8710dbfd-6800-4bc8-89a2-e17817a9e4a8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-45034", "type": "published-proof-of-concept", "source": "Telegram/bfOUhtYO5_knJKoj_if_OKxt7hZq78r0zHfwCUUuIAza2Gk", "content": "", "creation_timestamp": "2026-06-11T11:00:12.000000Z"}, {"uuid": "a55716d3-1207-4440-ab27-47ac220e7d3f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-45034", "type": "seen", "source": "https://bsky.app/profile/offseq.bsky.social/post/3movrqvzwr72j", "content": "CRITICAL: PHPOffice PhpSpreadsheet vulnerable to RCE via phar deserialization (CVE-2026-45034). Update to 1.30.5 to secure your apps. https://radar.offseq.com/threat/cve-2026-45034-cwe-502-deserialization-of-untruste-7ddc5d39407c5a37 #OffSeq #CVE202645034 #security", "creation_timestamp": "2026-06-22T21:00:15.916269Z"}]}