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Vulnerability · Published Nov 4, 2026 · Assigned by GitHub_M

CVE-2026-102337Webmin: SSRF exploit in Upload and Download and File Manager modules

Medium 4.9

In plain English

A medium-severity server-side request forgery in webmin from webmin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 4.0)4.9Medium
Exploit odds (30 days)0.5%top 56.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Webmin is a web-based system administration tool for Unix-like servers. Prior to 2.652, untrusted users with access to the File Manager or Upload and Download modules can direct Webmin's server-side URL download functionality to non-public network addresses because download destinations are not restricted by resolved IP address. This allows requests to unauthenticated intranet services or cloud-provider instance metadata endpoints that are inaccessible from the user's own system. This issue is fixed in 2.652.

Affected products (as reported)

VendorProductVersions
webmin webmin < 2.652

Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

References