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    <title>Most recent entries from all</title>
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    <lastBuildDate>Tue, 29 Sep 2026 12:11:25 +0000</lastBuildDate>
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      <title>CVE-2026-48020 — Traefik StripPrefix Route-Level Auth Bypass via Path Normalization</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-48020</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; traefik, Red Hat OpenShift Dev Spaces 3.30&lt;/p&gt;
&lt;p&gt;Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik&amp;#39;s StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a PathPrefix rule and applies the StripPrefix middleware, a request path containing .. or its percent-encoded form %2e%2e can match the public route at routing time and then, after the prefix is stripped and the path is normalized, resolve to a path served by a separate, authenticated router. As a result, an attacker can reach protected backend paths — such as admin or internal configuration endpoints — without satisfying the authentication middleware attached to the protected router. This vulnerability is fixed in 2.11.48, 3.6.19, and 3.7.3.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; traefik, Red Hat OpenShift Dev Spaces 3.30&lt;/p&gt;
&lt;p&gt;Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik&amp;#39;s StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a PathPrefix rule and applies the StripPrefix middleware, a request path containing .. or its percent-encoded form %2e%2e can match the public route at routing time and then, after the prefix is stripped and the path is normalized, resolve to a path served by a separate, authenticated router. As a result, an attacker can reach protected backend paths — such as admin or internal configuration endpoints — without satisfying the authentication middleware attached to the protected router. This vulnerability is fixed in 2.11.48, 3.6.19, and 3.7.3.&lt;/p&gt;</content:encoded>
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