CVE-2026-2340
A flaw was found in Samba’s vfs_worm module.
Published May 27, 2026 · updated Oct 14, 2026 · redhat openshift container platform
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.
Timeline
Detection, updates, and resolution for this record.
May 27, 2026 · NIST NVD
Detected
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 fi
Oct 14, 2026 · NIST NVD
Updated
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 fi
Affected
- cpe redhat/enterprise linux10.0
- cpe redhat/enterprise linux7.0
- cpe redhat/enterprise linux8.0
- cpe redhat/enterprise linux9.0
- cpe redhat/openshift container platform4.0
- cpe samba/sambaversion unspecified
Sources
- CVE.orgCVE-2026-2340
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-2340
30-day exploitation probability 0.9%
first.org - NIST NVDCVE-2026-2340
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
nvd.nist.gov