{"id":"CVE-2026-109411","aliases":["DEBIAN-CVE-2026-109411","EUVD-2026-112398","GHSA-pwp9-3h93-h2x8","UBUNTU-CVE-2026-109411","openSUSE-SU-2026:12334-1"],"status":"published","title":"Samba: access control bypass via vfs_ceph_rgw case-insensitive open","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00649,"percentile":0.51637,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-178"],"published":"2026-10-28T00:00:00Z","modified":"2026-11-04T21:48:36Z","fixes":[{"ecosystem":"Debian:14","package":"samba","fixed_in":["2:4.25.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"samba","fixed_in":["4.25.1+git.476.bfc358351cb-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.25.1+dfsg-1"}]}],"versions":["2:4.22.3+dfsg-4","2:4.22.4+dfsg-1","2:4.22.4+dfsg-1~deb13u1","2:4.22.4+dfsg-1~deb13u1~bpo12+1","2:4.23.0+dfsg-1","2:4.23.0+dfsg-2","2:4.23.0+dfsg-3","2:4.23.0~rc1+dfsg-1","2:4.23.0~rc2+dfsg-1","2:4.23.0~rc3+dfsg-1","2:4.23.1+dfsg-1","2:4.23.2+dfsg-1","2:4.23.3+dfsg-1","2:4.23.3+dfsg-1~bpo13+1","2:4.23.4+dfsg-1","2:4.23.4+dfsg-1~bpo13+1","2:4.23.5+dfsg-1","2:4.23.5+dfsg-1~bpo13+1","2:4.23.6+dfsg-1","2:4.23.6+dfsg-2","2:4.23.6+dfsg-2~bpo13+1","2:4.24.0+dfsg-1","2:4.24.0~rc1+dfsg-1","2:4.24.0~rc1+dfsg-2","2:4.24.0~rc1+dfsg-3","2:4.24.0~rc2+dfsg-1","2:4.24.1+dfsg-1","2:4.24.2+dfsg-1","2:4.24.2+dfsg-1~bpo13+1","2:4.24.3+dfsg-1","2:4.24.3+dfsg-1~bpo13+1","2:4.24.4+dfsg-1","2:4.24.4+dfsg-1~bpo13+1","2:4.24.5+dfsg-1","2:4.24.5+dfsg-1~bpo13+1","2:4.24.6+dfsg-1","2:4.24.7+dfsg-1","2:4.24.7+dfsg-1~bpo13+1","2:4.25.0+dfsg-1","2:4.25.0~rc1+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:3.6.18-1ubuntu3","2:4.0.10+dfsg-4ubuntu2","2:4.0.13+dfsg-1ubuntu1","2:4.1.3+dfsg-2ubuntu2","2:4.1.3+dfsg-2ubuntu3","2:4.1.3+dfsg-2ubuntu4","2:4.1.3+dfsg-2ubuntu5","2:4.1.6+dfsg-1ubuntu1","2:4.1.6+dfsg-1ubuntu2","2:4.1.6+dfsg-1ubuntu2.14.04.1","2:4.1.6+dfsg-1ubuntu2.14.04.2","2:4.1.6+dfsg-1ubuntu2.14.04.3","2:4.1.6+dfsg-1ubuntu2.14.04.4","2:4.1.6+dfsg-1ubuntu2.14.04.5","2:4.1.6+dfsg-1ubuntu2.14.04.7","2:4.1.6+dfsg-1ubuntu2.14.04.8","2:4.1.6+dfsg-1ubuntu2.14.04.9","2:4.1.6+dfsg-1ubuntu2.14.04.11","2:4.1.6+dfsg-1ubuntu2.14.04.12","2:4.1.6+dfsg-1ubuntu2.14.04.13","2:4.3.8+dfsg-0ubuntu0.14.04.2","2:4.3.9+dfsg-0ubuntu0.14.04.1","2:4.3.9+dfsg-0ubuntu0.14.04.3","2:4.3.11+dfsg-0ubuntu0.14.04.1","2:4.3.11+dfsg-0ubuntu0.14.04.2","2:4.3.11+dfsg-0ubuntu0.14.04.3","2:4.3.11+dfsg-0ubuntu0.14.04.4","2:4.3.11+dfsg-0ubuntu0.14.04.6","2:4.3.11+dfsg-0ubuntu0.14.04.7","2:4.3.11+dfsg-0ubuntu0.14.04.8","2:4.3.11+dfsg-0ubuntu0.14.04.9","2:4.3.11+dfsg-0ubuntu0.14.04.10","2:4.3.11+dfsg-0ubuntu0.14.04.11","2:4.3.11+dfsg-0ubuntu0.14.04.12","2:4.3.11+dfsg-0ubuntu0.14.04.13","2:4.3.11+dfsg-0ubuntu0.14.04.14","2:4.3.11+dfsg-0ubuntu0.14.04.16","2:4.3.11+dfsg-0ubuntu0.14.04.17","2:4.3.11+dfsg-0ubuntu0.14.04.19","2:4.3.11+dfsg-0ubuntu0.14.04.20","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm14","2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.1.17+dfsg-4ubuntu2","2:4.1.20+dfsg-1ubuntu1","2:4.1.20+dfsg-1ubuntu2","2:4.1.20+dfsg-1ubuntu3","2:4.1.20+dfsg-1ubuntu5","2:4.3.3+dfsg-1ubuntu1","2:4.3.3+dfsg-1ubuntu2","2:4.3.3+dfsg-1ubuntu3","2:4.3.6+dfsg-1ubuntu1","2:4.3.8+dfsg-0ubuntu1","2:4.3.9+dfsg-0ubuntu0.16.04.1","2:4.3.9+dfsg-0ubuntu0.16.04.2","2:4.3.9+dfsg-0ubuntu0.16.04.3","2:4.3.11+dfsg-0ubuntu0.16.04.1","2:4.3.11+dfsg-0ubuntu0.16.04.3","2:4.3.11+dfsg-0ubuntu0.16.04.5","2:4.3.11+dfsg-0ubuntu0.16.04.6","2:4.3.11+dfsg-0ubuntu0.16.04.7","2:4.3.11+dfsg-0ubuntu0.16.04.8","2:4.3.11+dfsg-0ubuntu0.16.04.9","2:4.3.11+dfsg-0ubuntu0.16.04.10","2:4.3.11+dfsg-0ubuntu0.16.04.11","2:4.3.11+dfsg-0ubuntu0.16.04.12","2:4.3.11+dfsg-0ubuntu0.16.04.13","2:4.3.11+dfsg-0ubuntu0.16.04.15","2:4.3.11+dfsg-0ubuntu0.16.04.16","2:4.3.11+dfsg-0ubuntu0.16.04.17","2:4.3.11+dfsg-0ubuntu0.16.04.18","2:4.3.11+dfsg-0ubuntu0.16.04.19","2:4.3.11+dfsg-0ubuntu0.16.04.20","2:4.3.11+dfsg-0ubuntu0.16.04.21","2:4.3.11+dfsg-0ubuntu0.16.04.23","2:4.3.11+dfsg-0ubuntu0.16.04.24","2:4.3.11+dfsg-0ubuntu0.16.04.25","2:4.3.11+dfsg-0ubuntu0.16.04.26","2:4.3.11+dfsg-0ubuntu0.16.04.27","2:4.3.11+dfsg-0ubuntu0.16.04.28","2:4.3.11+dfsg-0ubuntu0.16.04.29","2:4.3.11+dfsg-0ubuntu0.16.04.30","2:4.3.11+dfsg-0ubuntu0.16.04.31","2:4.3.11+dfsg-0ubuntu0.16.04.32","2:4.3.11+dfsg-0ubuntu0.16.04.34","2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1","2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2","2:4.3.11+dfsg-0ubuntu0.16.04.34+esm3","2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.6.7+dfsg-1ubuntu3","2:4.7.1+dfsg-1ubuntu1","2:4.7.3+dfsg-1ubuntu1","2:4.7.4+dfsg-1ubuntu1","2:4.7.6+dfsg~ubuntu-0ubuntu1","2:4.7.6+dfsg~ubuntu-0ubuntu2","2:4.7.6+dfsg~ubuntu-0ubuntu2.2","2:4.7.6+dfsg~ubuntu-0ubuntu2.4","2:4.7.6+dfsg~ubuntu-0ubuntu2.5","2:4.7.6+dfsg~ubuntu-0ubuntu2.6","2:4.7.6+dfsg~ubuntu-0ubuntu2.7","2:4.7.6+dfsg~ubuntu-0ubuntu2.9","2:4.7.6+dfsg~ubuntu-0ubuntu2.10","2:4.7.6+dfsg~ubuntu-0ubuntu2.11","2:4.7.6+dfsg~ubuntu-0ubuntu2.13","2:4.7.6+dfsg~ubuntu-0ubuntu2.14","2:4.7.6+dfsg~ubuntu-0ubuntu2.15","2:4.7.6+dfsg~ubuntu-0ubuntu2.16","2:4.7.6+dfsg~ubuntu-0ubuntu2.17","2:4.7.6+dfsg~ubuntu-0ubuntu2.18","2:4.7.6+dfsg~ubuntu-0ubuntu2.19","2:4.7.6+dfsg~ubuntu-0ubuntu2.20","2:4.7.6+dfsg~ubuntu-0ubuntu2.21","2:4.7.6+dfsg~ubuntu-0ubuntu2.23","2:4.7.6+dfsg~ubuntu-0ubuntu2.24","2:4.7.6+dfsg~ubuntu-0ubuntu2.26","2:4.7.6+dfsg~ubuntu-0ubuntu2.27","2:4.7.6+dfsg~ubuntu-0ubuntu2.28","2:4.7.6+dfsg~ubuntu-0ubuntu2.29","2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1","2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm2","2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.10.7+dfsg-0ubuntu2","2:4.10.7+dfsg-0ubuntu3","2:4.11.1+dfsg-3ubuntu1","2:4.11.1+dfsg-3ubuntu2","2:4.11.1+dfsg-3ubuntu4","2:4.11.5+dfsg-1ubuntu1","2:4.11.5+dfsg-1ubuntu2","2:4.11.6+dfsg-0ubuntu1","2:4.11.6+dfsg-0ubuntu1.1","2:4.11.6+dfsg-0ubuntu1.2","2:4.11.6+dfsg-0ubuntu1.3","2:4.11.6+dfsg-0ubuntu1.4","2:4.11.6+dfsg-0ubuntu1.5","2:4.11.6+dfsg-0ubuntu1.6","2:4.11.6+dfsg-0ubuntu1.8","2:4.11.6+dfsg-0ubuntu1.9","2:4.11.6+dfsg-0ubuntu1.10","2:4.13.14+dfsg-0ubuntu0.20.04.1","2:4.13.14+dfsg-0ubuntu0.20.04.2","2:4.13.14+dfsg-0ubuntu0.20.04.3","2:4.13.14+dfsg-0ubuntu0.20.04.4","2:4.13.17~dfsg-0ubuntu0.21.04.1","2:4.13.17~dfsg-0ubuntu0.21.04.2","2:4.13.17~dfsg-0ubuntu1.20.04.1","2:4.13.17~dfsg-0ubuntu1.20.04.2","2:4.13.17~dfsg-0ubuntu1.20.04.4","2:4.13.17~dfsg-0ubuntu1.20.04.5","2:4.15.13+dfsg-0ubuntu0.20.04.1","2:4.15.13+dfsg-0ubuntu0.20.04.2","2:4.15.13+dfsg-0ubuntu0.20.04.3","2:4.15.13+dfsg-0ubuntu0.20.04.4","2:4.15.13+dfsg-0ubuntu0.20.04.5","2:4.15.13+dfsg-0ubuntu0.20.04.6","2:4.15.13+dfsg-0ubuntu0.20.04.7","2:4.15.13+dfsg-0ubuntu0.20.04.8","2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1","2:4.15.13+dfsg-0ubuntu0.20.04.8+esm2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.13.5+dfsg-2ubuntu2","2:4.13.5+dfsg-2ubuntu3","2:4.13.14+dfsg-0ubuntu1","2:4.13.14+dfsg-0ubuntu2","2:4.15.5~dfsg-0ubuntu1","2:4.15.5~dfsg-0ubuntu2","2:4.15.5~dfsg-0ubuntu4","2:4.15.5~dfsg-0ubuntu5","2:4.15.5~dfsg-0ubuntu5.1","2:4.15.9+dfsg-0ubuntu0.2","2:4.15.9+dfsg-0ubuntu0.3","2:4.15.13+dfsg-0ubuntu1","2:4.15.13+dfsg-0ubuntu1.1","2:4.15.13+dfsg-0ubuntu1.2","2:4.15.13+dfsg-0ubuntu1.3","2:4.15.13+dfsg-0ubuntu1.4","2:4.15.13+dfsg-0ubuntu1.5","2:4.15.13+dfsg-0ubuntu1.6","2:4.15.13+dfsg-0ubuntu1.7","2:4.15.13+dfsg-0ubuntu1.8","2:4.15.13+dfsg-0ubuntu1.9","2:4.15.13+dfsg-0ubuntu1.10","2:4.15.13+dfsg-0ubuntu1.12","2:4.15.13+dfsg-0ubuntu1.13"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.18.6+dfsg-1ubuntu2","2:4.18.6+dfsg-1ubuntu2.1","2:4.18.6+dfsg-1ubuntu2.2","2:4.19.4+dfsg-3ubuntu1","2:4.19.5+dfsg-1ubuntu1","2:4.19.5+dfsg-4ubuntu7","2:4.19.5+dfsg-4ubuntu8","2:4.19.5+dfsg-4ubuntu9","2:4.19.5+dfsg-4ubuntu9.2","2:4.19.5+dfsg-4ubuntu9.3","2:4.19.5+dfsg-4ubuntu9.4","2:4.19.5+dfsg-4ubuntu9.6","2:4.19.5+dfsg-4ubuntu9.7","2:4.19.5+dfsg-4ubuntu9.8"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.23.6+dfsg-1ubuntu2","2:4.23.6+dfsg-1ubuntu3","2:4.24.4+dfsg-1ubuntu1","2:4.24.6+dfsg-1ubuntu1","2:4.24.7+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.22.3+dfsg-4ubuntu2","2:4.22.3+dfsg-4ubuntu2.1","2:4.22.3+dfsg-4ubuntu3","2:4.22.3+dfsg-4ubuntu4","2:4.23.4+dfsg-1ubuntu1","2:4.23.5+dfsg-1ubuntu2","2:4.23.6+dfsg-1ubuntu1","2:4.23.6+dfsg-1ubuntu2","2:4.23.6+dfsg-1ubuntu2.1","2:4.23.6+dfsg-1ubuntu2.2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.25.1+git.476.bfc358351cb-1.1"}]}]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"red hat","product":"red hat openshift container platform 4"},{"vendor":"red hat","product":"red hat openshift container platform 5"},{"vendor":"samba","product":"samba"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-109411","tags":["vdb-entry","x_refsource_REDHAT","advisory"]},{"url":"https://attachments.samba.org/attachment.cgi?id=19294","tags":["web"]},{"url":"https://attachments.samba.org/attachment.cgi?id=19295","tags":["web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552136","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.samba.org/show_bug.cgi?id=16276","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109411","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-pwp9-3h93-h2x8"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109411.json","tags":["advisory"]},{"url":"https://gitlab.com/samba-team/samba","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109411","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109411","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109411","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-109411","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-109411","title":"Samba: access control bypass via vfs_ceph_rgw case-insensitive open","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T19:17:45.459Z","modified":"2026-11-04T21:48:36.103Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-178"],"updated_at":"2026-11-04T22:39:14.734949Z"}],"euvd":[{"id":"EUVD-2026-112398","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T19:17:45Z","modified":"2026-11-04T21:48:36Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-04T23:47:19.24864Z"}],"ghsa":[{"id":"GHSA-pwp9-3h93-h2x8","title":"An access control bypass flaw was found in Samba's vfs_ceph_rgw module in it's openat() function....","description":"An access control bypass flaw was found in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T21:31:17Z","modified":"2026-10-28T21:31:25Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-178"],"updated_at":"2026-11-02T15:14:36.959763Z"}],"nvd":[{"id":"CVE-2026-109411","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T20:17:17.007Z","modified":"2026-11-04T22:17:46.553Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-178"],"updated_at":"2026-11-04T23:43:42.577076Z"}],"osv":[{"id":"CVE-2026-109411","title":"Samba: access control bypass via vfs_ceph_rgw case-insensitive open","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T19:17:45.459Z","modified":"2026-11-05T21:16:15.248275293Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-178"],"updated_at":"2026-11-05T22:00:58.054534Z"},{"id":"DEBIAN-CVE-2026-109411","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T20:17:17.007Z","modified":"2026-11-05T09:47:34.59075777Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-05T13:31:24.64316Z"},{"id":"UBUNTU-CVE-2026-109411","description":"An access control bypass flaw was identified in Samba's vfs_ceph_rgw module in it's openat() function. An authenticated user can bypass access controls to read or overwrite restricted files on shares configured with the experimental vfs_ceph_rgw module. When a client requests an existing file using mismatched character casing, the module fails to perform a case-insensitive lookup correctly, causing the server to treat the operation as creating a new file. As a result, the server skips standard permission checks on the existing file, allowing the attacker to access or overwrite sensitive data owned by other users.","status":"published","published":"2026-10-28T20:17:00Z","modified":"2026-11-05T11:45:38.704287011Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-05T13:30:15.321876Z"},{"id":"openSUSE-SU-2026:12334-1","title":"ctdb-4.25.1+git.476.bfc358351cb-1.1 on GA media","description":"These are all security issues fixed in the ctdb-4.25.1+git.476.bfc358351cb-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-28T00:00:00Z","modified":"2026-10-29T12:15:06.953028969Z","updated_at":"2026-11-02T16:58:40.245664Z"}]}}