{"vulnerability": "cve-2026-12583", "sightings": [{"uuid": "b67a9d2e-24ca-43c2-97e0-70bee1add4dd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-12583", "type": "seen", "source": "https://infosec.exchange/users/offseq/statuses/116917156404370712", "content": "Deserialization of untrusted data (CVE-2026-12583, CRITICAL) in Newsletters WP plugin <4.15 allows unauthenticated RCE via public form. Disable or restrict plugin until patch is confirmed. https://radar.offseq.com/threat/cve-2026-12583-cwe-502-deserialization-of-untruste-c97ca770117c8a32 #OffSeq #WordPress #Vuln #RCE", "creation_timestamp": "2026-07-14T07:30:28.177343Z"}, {"uuid": "62d6c2ee-45bf-4044-b2ab-e91f462adbf6", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-12583", "type": "seen", "source": "https://bsky.app/profile/offseq.bsky.social/post/3mqlora4oen23", "content": "Newsletters WP plugin <4.15 impacted by CRITICAL deserialization vuln (CVE-2026-12583). Unauthenticated attackers can achieve RCE. Restrict or disable plugin until fix. https://radar.offseq.com/threat/cve-2026-12583-cwe-502-deserialization-of-untruste-c97ca770117c8a32 #OffSeq #WordPress #Security", "creation_timestamp": "2026-07-14T07:30:30.206440Z"}, {"uuid": "b82a26d8-2f5c-4da9-a6a2-06f49570fcb3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-12583", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mqlv6rfmw42x", "content": "CVE-2026-12583 - Newsletters\nCVE ID : CVE-2026-12583\n \n Published : 14. Juli 2026 06:17 | 1\u00a0Stunde, 13\u00a0Minuten ago\n \n Description : The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing u...", "creation_timestamp": "2026-07-14T09:25:26.108995Z"}]}