{"id":"CVE-2026-18636","aliases":["EUVD-2026-56178","GHSA-96p2-wv27-6pfj","openSUSE-SU-2026:12070-1"],"status":"published","title":"Velociraptor VFSGetBuffer API path deny list bypass","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.004,"percentile":0.34683,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288"],"published":"2026-08-11T14:40:12Z","modified":"2026-10-28T02:30:47Z","affected":[{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"velociraptor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.76.7.0.git145.b60ef1146-1.1"}]}],"bundled":40}],"products":[{"vendor":"rapid7","product":"velociraptor"}],"references":[{"url":"http://docs.velociraptor.app/announcements/advisories/cve-2026-18636/","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18636","tags":["advisory"]},{"url":"http://docs.velociraptor.app/announcements/advisories/cve-2026-18636"},{"url":"https://github.com/advisories/GHSA-96p2-wv27-6pfj"},{"url":"https://github.com/Velocidex/velociraptor/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18636.json","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-0914","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-12143","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-14257","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-17535","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18348","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18636","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18638","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18639","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18860","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27601","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-29074","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41650","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45623","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49356","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-5329","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-53550","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55602","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-56852","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-59869","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6290","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-64951","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-64952","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-64954","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65903","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65912","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65913","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65914","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-67314","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-67320","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6863","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-69152","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-69153","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6948","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-73086","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-73646","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-73650","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-7572","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-7573","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84369","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84370","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-18636","title":"Velociraptor VFSGetBuffer API path deny list bypass","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","status":"published","published":"2026-08-11T14:40:12.322Z","modified":"2026-08-11T19:43:56.379Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-56178","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","status":"published","published":"2026-08-11T14:40:12Z","modified":"2026-08-11T19:43:56Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:59.481615Z"}],"ghsa":[{"id":"GHSA-96p2-wv27-6pfj","title":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the...","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","status":"published","published":"2026-08-11T15:32:45Z","modified":"2026-08-11T15:32:46Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:10:17.573081Z"}],"nvd":[{"id":"CVE-2026-18636","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","status":"published","published":"2026-08-11T15:17:28.76Z","modified":"2026-10-23T19:10:00.167Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:12:36.499002Z"}],"osv":[{"id":"CVE-2026-18636","title":"Velociraptor VFSGetBuffer API path deny list bypass","description":"The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.","status":"published","published":"2026-08-11T14:40:12.322Z","modified":"2026-10-28T02:30:47.509096288Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:44:58.024074Z"},{"id":"openSUSE-SU-2026:12070-1","title":"velociraptor-0.76.7.0.git145.b60ef1146-1.1 on GA media","description":"These are all security issues fixed in the velociraptor-0.76.7.0.git145.b60ef1146-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-06T00:00:00Z","modified":"2026-10-07T17:23:11.433086957Z","updated_at":"2026-11-02T16:58:40.245664Z"}]}}