CVE•Published 2026-05-08•Modified 2026-05-08•1 article on news•5 live references•NVD data

CVE-2026-42275Netfoundry · Zrok

Vulnerability data via NVD (ingested)

CVSS v3.1

8.7

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS percentile

—

Weaknesses (CWE)

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CWE-61UNIX Symbolic Link (Symlink) Following

Description

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.2, the zrok WebDAV drive backend (davServer.Dir) restricts path traversal through lexical normalization but does not prevent symlink following. When a symbolic link inside the shared DriveRoot points to a location outside that root, remote WebDAV consumers can read files and—on shares without OS-level permission restrictions—write or overwrite files anywhere on the host filesystem accessible to the zrok process. This issue has been patched in version 2.0.2.

Timeline

Published 2026-05-08

Modified 2026-05-08

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-42275

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Netfoundry Zrok"

All exposed Netfoundry Zrok instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Zrok"

HTTP body or banner mentions "Zrok" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-42275