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CVE-2026-109411
HIGH(8.1)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Risk Signal Score20/100 — NIEDRIG
- CVSS 8.1 — Hoch
Erwähnungen (letzte 60 Tage)
Artikel
EPSS-Score
0.6%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
8.1
Technische Schwere
Beschreibung
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.