{"vulnerability": "CVE-2026-84383", "sightings": [{"uuid": "e59d9d6a-7188-4152-8721-aa6e63febab2", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-84383", "type": "seen", "source": "https://bsky.app/profile/stackflag.bsky.social/post/3mvsnejon462t", "content": "CVE-2026-84383 - libheif\nA flaw in a popular image\u2011processing library lets specially crafted image files cause a memory overflow when the software resizes them. This can lead to program crashes or\u2026\n\nToo many irrelevant or confusing CVEs? Use stackflag.com\n\n#libheif #debian #Debian14 #CVE #infosec", "creation_timestamp": "2026-09-18T17:00:06.054195Z"}, {"uuid": "1d5d5c0c-1e4a-4918-954e-4e6cc25cf5b5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-84383", "type": "seen", "source": "https://bsky.app/profile/vulnsea.com/post/3mvsodr65w62q", "content": "\ud83c\udf0a ABYSSAL \u00b7 critical with a public exploit\nCVE-2026-84383: libheif is a HEIF and AVIF file format decoder and encoder\nCVSS 9.8\nhttps://beta.vulnsea.com/cve/CVE-2026-84383\n\n#CVE #infosec #cybersecurity #threatintel", "creation_timestamp": "2026-09-18T17:17:34.196449Z"}, {"uuid": "eb6ddc6f-d389-4672-bbf4-292a8b9d54de", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-84383", "type": "seen", "source": "https://bsky.app/profile/cybercod.bsky.social/post/3mvspstjfsw23", "content": "Thanks for the heads-up on CVE-2026-84383, ABYSSAL. A public exploit for a critical libheif flaw is concerning. Will keep an eye out for official vendor advisories and patches. Stay safe!", "creation_timestamp": "2026-09-18T17:43:53.856428Z"}, {"uuid": "3af21988-e55b-4e8b-a18e-e2b354a3eb3d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-84383", "type": "seen", "source": "https://bsky.app/profile/stemshop.bsky.social/post/3mvsr6w7vts2t", "content": "\ud83d\udea8 CVE-2026-84383 \u2014 CVSS 9.8 CRITICAL\n\nlibheif is a HEIF and AVIF file format decoder and encoder. From 1.22.0 until 1.23.2, a crafted HEIF, HEIC,...\n\n\ud83d\udd0e https://stemshop.top/cve/CVE-2026-84383\n\n#CVE #CyberSecurity #InfoSec", "creation_timestamp": "2026-09-18T18:08:33.078156Z"}]}