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    <lastBuildDate>Wed, 07 Oct 2026 07:00:00 +0000</lastBuildDate>
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      <title>CVE-2026-40303 — zrok allows unauthenticated DoS via unbounded memory allocation in striped session cookie parsing</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-40303</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openziti zrok&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openziti zrok&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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