CVE-2026-102337

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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
4.9 MEDIUM
NETWORK
LOW
LOW
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
webminwebmin
𝑥
< 2.652
CNA
Common Weakness Enumeration
References
https://github.com/webmin/webmin/commit/5b6b43ac3d09ff582c1fa89d9589324f02320c42
https://github.com/webmin/webmin/commit/e805319233c5a6837e97b35a329c6bb2cad82657
https://github.com/webmin/webmin/commit/f62fd9e23adc9dc7c65ff75b31d10ae3e7eadc90
https://github.com/webmin/webmin/pull/2789
https://github.com/webmin/webmin/releases/tag/2.652
https://github.com/webmin/webmin/security/advisories/GHSA-x8qr-rx2g-f23g