{"vulnerability": "cve-2026-90990", "sightings": [{"uuid": "fd3cbbbe-0129-4796-9cfc-e07d6cab0902", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-90990", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/65v4t3qm3nya2", "content": "CVE-2026-90990 - Livestatus injection via monitoring filter values\nCVE ID : CVE-2026-90990\n \n Published : Sept. 22, 2026, 10:43 a.m. | 36\u00a0minutes ago\n \n Description : Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk &...", "creation_timestamp": "2026-09-22T11:55:46.787592Z"}, {"uuid": "b3f8226f-a4d9-41cf-9994-3c261a2a1a73", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-90990", "type": "seen", "source": "https://mastodon.social/users/hugovalters/statuses/117374779453571635", "content": "CVE-2026-90990 Checkmk <2.5.0p14 CVSS 7.1. Authenticated users can inject Livestatus headers to bypass visibility and leak host/service info. No patch yet. Restrict access and monitor. https://www.valtersit.com/cve/CVE-2026-90990/ #CVE #infosec #Checkmk", "creation_timestamp": "2026-10-03T03:10:02.098144Z"}, {"uuid": "c39841b0-d0e1-41a4-b556-19eb773214ac", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-90990", "type": "seen", "source": "https://bsky.app/profile/hugovalters.bsky.social/post/3mwwx3u7qwe2b", "content": "CVE-2026-90990 Checkmk <2.5.0p14 CVSS 7.1. Authenticated users can inject Livestatus headers to bypass visibility and leak host/service info. No patch yet. Restrict access and monitor. https://www.valtersit.com/cve/CVE-2026-90990/ #CVE #infosec #Checkmk", "creation_timestamp": "2026-10-03T03:30:04.090636Z"}]}