CVE-2026-42275: high-severity vulnerability in openziti zrok
zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.3%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
openziti · zrokRelated CVEs — openziti zrok
In the same product, most dangerous first.
CVE-2026-45568CRITICALzrok Python ProxyShare can be used as an SSRF proxy through absolute URL pathsEPSS 0.5%CVE-2026-45576HIGHzrok copy writes attacker-controlled WebDAV paths outside the destination rootEPSS 0.5%CVE-2026-40303HIGHzrok allows unauthenticated DoS via unbounded memory allocation in striped session cookie parsingEPSS 0.5%CVE-2026-40304MEDIUMzrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend recordsEPSS 0.3%CVE-2026-40302MEDIUMzrok has reflected XSS in GitHub OAuth callback via unsanitized refreshInterval error renderingEPSS 0.2%