cvedb.io
CVE-2026-40303
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-04-17T21:16:35.140 · Last modified 2026-06-17T10:44:58.260

Summary

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, endpoints.GetSessionCookie parses an attacker-supplied cookie chunk count and calls make([]string, count) with no upper bound before any token validation occurs. The function is reached on every request to an OAuth-protected proxy share, allowing an unauthenticated remote attacker to trigger gigabyte-scale heap allocations per request, leading to process-level OOM termination or repeated goroutine panics. Both publicProxy and dynamicProxy are affected. Version 2.0.1 patches the issue.

Affected products

netfoundry — zrok

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.