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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Tue, 06 Oct 2026 12:30:15 +0000</lastBuildDate>
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      <title>CVE-2026-68555 — coturn: Chained mobility resumes allow authenticated remote memory exhaustion</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-68555</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; coturn&lt;/p&gt;
&lt;p&gt;Coturn is a free open source implementation of TURN and STUN Server. In 4.15.0, an authenticated TURN user can repeatedly resume one allocation from fresh UDP 5-tuples without completing a handoff when the server enables --mobility. mobile_begin_transition() in src/server/ns_turn_server.c disarms each new session&amp;#39;s allocation timeout and overwrites the allocation&amp;#39;s single mobile_pending_resume link, leaving earlier pending sessions unreachable by the cleanup path, while copy_auth_parameters() ignores inc_quota() failure. The attacker can therefore retain unbounded server-side sessions and exhaust process memory even when --user-quota=1 is configured. This issue is fixed in version 4.16.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; coturn&lt;/p&gt;
&lt;p&gt;Coturn is a free open source implementation of TURN and STUN Server. In 4.15.0, an authenticated TURN user can repeatedly resume one allocation from fresh UDP 5-tuples without completing a handoff when the server enables --mobility. mobile_begin_transition() in src/server/ns_turn_server.c disarms each new session&amp;#39;s allocation timeout and overwrites the allocation&amp;#39;s single mobile_pending_resume link, leaving earlier pending sessions unreachable by the cleanup path, while copy_auth_parameters() ignores inc_quota() failure. The attacker can therefore retain unbounded server-side sessions and exhaust process memory even when --user-quota=1 is configured. This issue is fixed in version 4.16.0.&lt;/p&gt;</content:encoded>
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