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    <title>Most recent entries from all</title>
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      <title>CVE-2026-62243 — Netty 4.2.0 through 4.2.16 TLS Hostname Verification Bypass</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-62243</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; netty&lt;/p&gt;
&lt;p&gt;Netty (io.netty:netty-handler) versions from 4.2.0.Final through 4.2.16.Final and versions through 4.1.136.Final disable TLS hostname verification on the SslProvider.OPENSSL client path when a plain (non-extended) X509TrustManager is used and Unsafe-based trust-manager wrapping is unavailable (Java 25+). In this configuration the OpenSSL client does not perform hostname verification, allowing a man-in-the-middle attacker to present a certificate issued for a different hostname that is accepted without validation. Fixed in 4.2.17.Final and 4.1.137.Final.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; netty&lt;/p&gt;
&lt;p&gt;Netty (io.netty:netty-handler) versions from 4.2.0.Final through 4.2.16.Final and versions through 4.1.136.Final disable TLS hostname verification on the SslProvider.OPENSSL client path when a plain (non-extended) X509TrustManager is used and Unsafe-based trust-manager wrapping is unavailable (Java 25+). In this configuration the OpenSSL client does not perform hostname verification, allowing a man-in-the-middle attacker to present a certificate issued for a different hostname that is accepted without validation. Fixed in 4.2.17.Final and 4.1.137.Final.&lt;/p&gt;</content:encoded>
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