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CVE-2026-123620 Details

Description

Usermin through 2.570 contains an OS command injection vulnerability in the Read Mail module that allows authenticated users to execute commands through unsanitized IMAP folder names. Attackers can create a folder containing shell metacharacters via an external IMAP client, then delete it in Usermin to run commands as their system account, bypassing webmail-only restrictions.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/webmin/usermin	[email protected]
https://github.com/webmin/usermin/blob/2.570/mailbox/mailbox-lib.pl#L1031-L1040	[email protected]
https://github.com/webmin/usermin/commit/8a45420282ff04c943f05d9241a3c55afb9bca79	[email protected]
https://github.com/webmin/usermin/issues/142	[email protected]
https://hackmd.io/@leediay/H144QKY6zl	[email protected]
https://www.vulncheck.com/advisories/usermin-through-2.570-os-command-injection-via-read-mail-imap-folder-deletion	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes