{"id":"CVE-2026-18749","title":"The type=track branch authorises on _is_my_case(t_attach.case) only and never checks VinceTrackAttachment.shared","summary":"The type=track branch authorises on _is_my_case(t_attach.case) only and never checks VinceTrackAttachment.shared. A coordinator-uploaded case artefact that has NOT been marked shared is still retrievable by any case member who has (or is…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-639"],"published":"2026-08-12","updated":"2026-09-08","sourceUpdated":"2026-09-08T14:07:24.140","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18749","references":[{"url":"https://github.com/CERTCC/VINCE","label":"cret@cert.org"},{"url":"https://github.com/CERTCC/VINCE/pull/235","label":"cret@cert.org"}],"tags":["nvd"],"epss":0.00351,"epssPercentile":0.28792,"ingestedAt":"2026-09-08T15:33:26.953Z","slug":"CVE-2026-18749","body":"## Overview\n\nThe type=track branch authorises on _is_my_case(t_attach.case) only and never checks VinceTrackAttachment.shared. A coordinator-uploaded case artefact that has NOT been marked shared is still retrievable by any case member who has (or is sent) its uuid — leaks not-yet-released coordinator material to vendors on the case.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}