# Netfoundry Zrok vulnerabilities

Source: https://junglewise.ai/threats/technologies/netfoundry-zrok  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/netfoundry-zrok.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Netfoundry Zrok: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42275, was published on 8 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 4 (0 critical, 0 exploited in the wild)

## About Netfoundry Zrok

Zrok is an open-source zero-trust sharing platform for securely exposing services and sharing content.

## Latest Netfoundry Zrok vulnerabilities

- [CVE-2026-42275: OpenZiti zrok symlink following in WebDAV drive backend](https://junglewise.ai/threats/cve-2026-42275-openziti-zrok-symlink-following-in-webdav-drive-backend) (high, CVSS 8.7, published 8 May 2026)
- [CVE-2026-40304: zrok: Broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records](https://junglewise.ai/threats/cve-2026-40304-zrok-broken-ownership-check-in-delete-api-v2-unaccess-allows-non) (medium, CVSS 5.3, published 17 Apr 2026)
- [CVE-2026-40303: zrok: Unauthenticated DoS via unbounded memory allocation in striped session cookie parsing](https://junglewise.ai/threats/cve-2026-40303-zrok-unauthenticated-dos-via-unbounded-memory-allocation-in) (high, CVSS 7.5, published 17 Apr 2026)
- [CVE-2026-40302: zrok: Reflected XSS in GitHub OAuth callback via unsanitized refreshInterval error rendering](https://junglewise.ai/threats/cve-2026-40302-zrok-reflected-xss-in-github-oauth-callback-via-unsanitized) (medium, CVSS 6.1, published 17 Apr 2026)

## Most severe Netfoundry Zrok vulnerabilities

- [CVE-2026-42275: OpenZiti zrok symlink following in WebDAV drive backend](https://junglewise.ai/threats/cve-2026-42275-openziti-zrok-symlink-following-in-webdav-drive-backend) (high, CVSS 8.7, published 8 May 2026)
- [CVE-2026-40303: zrok: Unauthenticated DoS via unbounded memory allocation in striped session cookie parsing](https://junglewise.ai/threats/cve-2026-40303-zrok-unauthenticated-dos-via-unbounded-memory-allocation-in) (high, CVSS 7.5, published 17 Apr 2026)
- [CVE-2026-40302: zrok: Reflected XSS in GitHub OAuth callback via unsanitized refreshInterval error rendering](https://junglewise.ai/threats/cve-2026-40302-zrok-reflected-xss-in-github-oauth-callback-via-unsanitized) (medium, CVSS 6.1, published 17 Apr 2026)
- [CVE-2026-40304: zrok: Broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records](https://junglewise.ai/threats/cve-2026-40304-zrok-broken-ownership-check-in-delete-api-v2-unaccess-allows-non) (medium, CVSS 5.3, published 17 Apr 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Netfoundry Zrok vulnerabilities", https://junglewise.ai/threats/technologies/netfoundry-zrok, 9 November 2026.