CVE-2026-45576
zrok copy writes attacker-controlled WebDAV paths outside the destination root
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.
INFO
Published Date :
July 16, 2026, 5:16 p.m.
Last Modified :
July 20, 2026, 1:54 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update zrok to version 2.0.3 or newer.
- Verify the zrok version is updated.
- Review file access controls.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45576.
| URL | Resource |
|---|---|
| https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457 | Patch |
| https://github.com/openziti/zrok/releases/tag/v2.0.3 | Release Notes |
| https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45576 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45576
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45576 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45576 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:* versions from (including) 0.4.23 up to (excluding) 2.0.3 Added Reference Type GitHub, Inc.: https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/openziti/zrok/releases/tag/v2.0.3 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 16, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-45576', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-16T17:06:49.972811Z'} -
New CVE Received by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'openziti', 'product': 'zrok', 'versions': [{'status': 'affected', 'version': '>= 0.4.23, < 2.0.3'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457 Added Reference https://github.com/openziti/zrok/releases/tag/v2.0.3 Added Reference https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj