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PatchSiren cyber security CVE debrief

CVE-2026-45576 openziti CVE debrief

A high-severity vulnerability was discovered in zrok software, affecting versions from 0.4.23 to 2.0.3. The issue allows attackers to write files outside the selected local filesystem destination root via path traversal. This vulnerability exists in the `zrok2 copy` command, which stores attacker-controlled WebDAV or zrok drive paths and passes them to FilesystemTarget.WriteStream. This allows the sync pipeline to write files outside the selected local filesystem destination root. Users of zrok software, particularly those using versions between 0.4.23 and 2.0.3, should be aware of this vulnerability and take necessary precautions.

Vendor
openziti
Product
zrok
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-16
Original CVE updated
2026-07-20
Advisory published
2026-07-16
Advisory updated
2026-07-20

Who should care

Users of zrok software, particularly those using versions between 0.4.23 and 2.0.3, should be aware of this vulnerability and take necessary precautions. This includes updating zrok software to version 2.0.3 or later, reviewing and restricting access to sensitive files and directories, and monitoring for suspicious activity related to zrok software.

Technical summary

The vulnerability exists in the `zrok2 copy` command, which stores attacker-controlled WebDAV or zrok drive paths and passes them to FilesystemTarget.WriteStream. This allows the sync pipeline to write files outside the selected local filesystem destination root. The issue is fixed in version 2.0.3. The CVE record was published on 2026-07-16T17:16:56.567Z and last modified on 2026-07-16T18:16:43.653Z.

Defensive priority

High priority should be given to updating zrok software to version 2.0.3 or later to mitigate this vulnerability.

Recommended defensive actions

  • Update zrok software to version 2.0.3 or later
  • Review and restrict access to sensitive files and directories
  • Monitor for suspicious activity related to zrok software
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-16T17:16:56.567Z and last modified on 2026-07-16T18:16:43.653Z. The NVD entry is currently Undergoing Analysis. This information is based on the provided source corpus and may not reflect the current status. Users should verify the information with the official CVE record and NVD entry for the most up-to-date details.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45576 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45576

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-45576 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45576

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.