CVE-2026-2340

6.5 MEDIUM

A flaw was found in Samba’s vfs_worm module

Published: 2026-05-27 · Last updated: 2026-06-10

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE: CWE-280

Affected products

Vendor	Product
redhat	enterprise_linux, openshift_container_platform, samba
samba	enterprise_linux, openshift_container_platform, samba

Description

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: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-2340
[Other]https://access.redhat.com/errata/RHSA-2026:22963
[Other]https://access.redhat.com/errata/RHSA-2026:25049
[Other]https://access.redhat.com/security/cve/CVE-2026-2340
[Other]https://bugzilla.redhat.com/show_bug.cgi?id=2447318
[Vendor advisory]https://bugzilla.samba.org/show_bug.cgi?id=15997

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