Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Webmin Webmin
cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*
|
— |
1.290
|
References 4
https://github.com/webmin/webmin/releases/tag/2.641
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https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026…
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https://webmin.com/security/#webmin-prior-to-2641
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https://www.cve.org/CVERecord?id=CVE-2026-56021
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