CVE-2021-48011

Servor 1.0.0 through 4.0.2 contains a path traversal vulnerability that allows unauthenticated remote attackers to escape the served root by sending URL-encoded dot segments. Attackers can send %2e%2e/ sequences, which decodeURI() decodes before path.join() in serveStaticFile and serveDirectoryListing, to read arbitrary files and list directories outside the root.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/lukejacksonn/servor
https://github.com/lukejacksonn/servor/commit/ec7d824ea6903c0fb97a452045bbb8335198cbab
https://github.com/lukejacksonn/servor/pull/70
https://www.vulncheck.com/advisories/servor-1.0.0-through-4.0.2-unauthenticated-path-traversal-via-url-encoded-dot-segments

Configurations

No configuration.

History

12 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 21:17

Updated : 2026-10-16 19:18

NVD link : CVE-2021-48011

Mitre link : CVE-2021-48011

CVE.ORG link : CVE-2021-48011

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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