CVE-2021-48011 Servor - Path Traversal

Servor 1.0.0 through 4.0.2 contains a path traversal vulnerability caused by improper decoding of URL-encoded dot segments in serveStaticFile and serveDirectoryListing, letting unauthenticated remote attackers read arbitrary files and list directories outside the root, exploit requires no authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.56% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Read, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-22

Vendor fix

Upgrade to a version later than 4.0.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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