What’s Vulnerable › Vulnerabilities

CVE-2026-45576: zrok copy writes attacker-controlled WebDAV paths outside the destination root

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-10-24
• Weakness: CWE-22

Description

zrok is software for sharing web services, files, and network resources. From 0.4.23 until 2.0.3, `zrok2 copy` stores attacker-controlled WebDAV or zrok drive paths such as /../outside.txt in the source inventory and passes them to FilesystemTarget.WriteStream, allowing the sync pipeline to write files outside the selected local filesystem destination root. This issue is fixed in version 2.0.3.

Affected products

• openziti zrok: from 0.4.23 before 2.0.3 — fixed in 2.0.3

How to fix

Upgrade to a fixed version: openziti zrok 2.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457
• https://github.com/openziti/zrok/releases/tag/v2.0.3
• https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj

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