git: dfa272b3b1ce - main - security/vuxml: Document k8s / nginx cert validation bypass in traefik

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From: Thomas Zander <riggs_at_FreeBSD.org>
Date: Sun, 21 Dec 2025 12:30:49 UTC

The branch main has been updated by riggs:

URL: https://cgit.FreeBSD.org/ports/commit/?id=dfa272b3b1ce2cba6b49c90e76cd5f54d40eafee

commit dfa272b3b1ce2cba6b49c90e76cd5f54d40eafee
Author:     Thomas Zander <riggs@FreeBSD.org>
AuthorDate: 2025-12-21 12:27:27 +0000
Commit:     Thomas Zander <riggs@FreeBSD.org>
CommitDate: 2025-12-21 12:27:27 +0000

    security/vuxml: Document k8s / nginx cert validation bypass in traefik
---
 security/vuxml/vuln/2025.xml | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/security/vuxml/vuln/2025.xml b/security/vuxml/vuln/2025.xml
index 8962e758d218..3fa157e87559 100644
--- a/security/vuxml/vuln/2025.xml
+++ b/security/vuxml/vuln/2025.xml
@@ -1,3 +1,40 @@
+  <vuln vid="dc7e30db-de67-11f0-b893-5404a68ad561">
+    <topic>traefik -- Inverted TLS Verification Logic in Kubernetes NGINX Provider</topic>
+    <affects>
+<package>
+<name>traefik</name>
+<range><lt>3.6.3</lt></range>
+</package>
+    </affects>
+    <description>
+	<body xmlns="http://www.w3.org/1999/xhtml">
+	<p>The traefik project reports:</p>
+	<blockquote cite="https://github.com/traefik/traefik/security/advisories/GHSA-7vww-mvcr-x6vj">
+	  <p>
+	  There is a potential vulnerability in Traefik NGINX
+	  provider managing the
+	  nginx.ingress.kubernetes.io/proxy-ssl-verify annotation.
+	  The provider inverts the semantics of the
+	  nginx.ingress.kubernetes.io/proxy-ssl-verify annotation.
+	  Setting the annotation to "on" (intending to enable
+	  backend TLS certificate verification) actually disables
+	  verification, allowing man-in-the-middle attacks against
+	  HTTPS backends when operators believe they are
+	  protected.
+	  </p>
+	</blockquote>
+	</body>
+    </description>
+    <references>
+      <cvename>CVE-2025-66491</cvename>
+      <url>https://nvd.nist.gov/vuln/detail/CVE-2025-66491</url>
+    </references>
+    <dates>
+      <discovery>2025-12-08</discovery>
+      <entry>2025-12-21</entry>
+    </dates>
+  </vuln>
+
   <vuln vid="91b9790e-de65-11f0-b893-5404a68ad561">
     <topic>traefik -- Bypassing security controls via special characters</topic>
     <affects>