Webmin multiple vulnerabilities
view advisory published 2026-06-18
Webmin contains multiple vulnerabilities. In the worst case, a remote, unauthenticated attacker could impersonate and authenticate as any user.
01
describes (3)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-56022US | — | — | ||
Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header, allowing bypass of additional MFA requirements. Fixed in 2.64… | ||||
| CVE-2026-56021US | — | — | ||
Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern. | ||||
| CVE-2026-56020US | — | — | ||
The Webmin HTTP server (miniserv.pl) allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote att… | ||||
02
references
External citations — patches, advisories, analysis.
03
remediations (3)
- No fix plannedWebmin
No fix planned.
- FixedWebmin
Fixed in 2.202.
- FixedWebmin
Fixed in 2.640.
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