{"vulnerability": "CVE-2026-93990", "sightings": [{"uuid": "661596e9-cff1-4828-b2f6-cad41750d0c5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-93990", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mvvvfcvx4w2k", "content": "\ud83d\udfe0 CVE-2026-93990 - High (7.5)\n\nExpat through 2.8.4 fails to validate low surrogates following high surrogates in UTF-16 input, a...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-93990/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-09-20T00:01:42.851917Z"}, {"uuid": "1428bbab-fdc2-4fbf-9403-548624049efa", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-93990", "type": "seen", "source": "https://gist.github.com/ichintu/01ed07128f5969a05edb4956f1b946dd", "content": "**CVE-2026-93990** is a high-severity (8.7) vulnerability in the Expat XML parser (versions through 2.8.4), published September 19, 2026. It results from inadequate validation of UTF-16 surrogate pairs, allowing attackers to conceal XML markup characters and potentially enable XML injection attacks. Full technical details and CVSS metrics are available via the referenced link.", "creation_timestamp": "2026-09-20T00:01:58.744610Z"}, {"uuid": "5a765d0b-88c9-4199-b899-bbf54abfb1fb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-93990", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/5j4jai2gyffcl", "content": "CVE-2026-93990 - Expat through 2.8.4 Malformed UTF-16 Acceptance via Unchecked Surrogate\nCVE ID : CVE-2026-93990\n \n Published : Sept. 19, 2026, 11:17 p.m. | 19\u00a0minutes ago\n \n Description : Expat through 2.8.4 fails to validate low surrogates following high surrogates in UTF-16...", "creation_timestamp": "2026-09-20T00:06:36.548726Z"}]}