CVE-2026-45576 zrok copy writes attacker-controlled WebDAV paths outside the destination root
Attackers can write files outside the destination root via crafted WebDAV paths in zrok copy operations, requiring an upgrade to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-45576?
CVE-2026-45576 is a high-severity path traversal vulnerability in openziti zrok, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-45576?
6 open source packages ship an affected version, including github.com/openziti/zrok and github.com/openziti/zrok/v2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/openziti/zrok Go | From 0.4.23 | None |
github.com/openziti/zrok Go | From 0.4.23 to 1.1.11 | None |
github.com/openziti/zrok Go | From 0.4.23 to 1.1.11 | None |
github.com/openziti/zrok/v2 Go | All versions | 2.0.3 |
github.com/openziti/zrok/v2 Go | All versions | 2.0.3 |
github.com/openziti/zrok/v2 Go | All versions | 2.0.3 |
Products include Netfoundry Zrok.
How do I fix CVE-2026-45576?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-45576 being exploited?
There is no known exploitation of CVE-2026-45576 in the wild and no public exploit code.
Other vulnerabilities in openziti zrok
- CVE-2026-45568 zrok Python ProxyShare can be used as an SSRF proxy through absolute URL paths
- CVE-2026-42275 zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
- CVE-2026-40303 zrok allows unauthenticated DoS via unbounded memory allocation in striped session cookie parsing
- CVE-2026-40302 zrok has reflected XSS in GitHub OAuth callback via unsanitized refreshInterval error rendering
- CVE-2026-40304 zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records
Sources
Also known as GHSA-c656-jcx2-7pqj, GO-2026-5315.