CVE-2026-2340 — Samba: vfs_worm does not block directory modification
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable …
Published: 2026-05-27 · CVSS: 6.5 · CVSS 3.1
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7