{"id":"CVE-2026-18972","title":"An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \\\"Grpc-Metadata-USER\\\"","summary":"An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \\\"Grpc-Metadata-USER\\\". This can lead to an account takeover attack from a user with low privileges to administrator.","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-290"],"published":"2026-08-11","updated":"2026-08-28","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18972","references":[{"url":"http://docs.velociraptor.app/announcements/advisories/cve-2026-18972/","label":"cve@rapid7.com"}],"tags":["nvd"],"epss":0.06059,"epssPercentile":0.9306,"ingestedAt":"2026-08-29T19:41:14.016Z","slug":"CVE-2026-18972","body":"## Overview\n\nAn authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \\\"Grpc-Metadata-USER\\\". This can lead to an account takeover attack from a user with low privileges to administrator.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":52.8,"likelihood":1.2,"exploitation":0,"ransomware":0},"changes":[]}