CVE-2026-44726

Deno is a JavaScript, TypeScript, and WebAssembly runtime. From 2.0.0 until 2.7.8, a flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt...

CVE-2026-44726 Deno: TLS retry copies stale upgrade hook, risking plaintext traffic

Deno is a JavaScript, TypeScript, and WebAssembly runtime. From 2.0.0 until 2.7.8, a flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt...

CVE-2026-44726

Summary: CVE-2026-44726 affects Deno up to 2.7.7, where a flaw in Deno’s Node.js TLS compatibility layer can cause plaintext data to be sent after a connection retry when autoSelectFamily is enabled. The root cause is that the socket reinitialization path reuses a stale TLS upgrade hook tied to t...

CVE-2026-44726 Deno: TLS retry copies stale upgrade hook, risking plaintext traffic

Deno is a JavaScript, TypeScript, and WebAssembly runtime. From 2.0.0 until 2.7.8, a flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt...

Deno's TLS retry copies stale upgrade hook, risking plaintext traffic

Summary A flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt failed, the socket reinitialization path reused a stale TLS upgrade hook tha...

GHSA-CHQV-56WV-7564 Deno's TLS retry copies stale upgrade hook, risking plaintext traffic

Summary A flaw in Deno's Node.js tls compatibility layer could cause a TLS client to transmit application data in plaintext after a connection retry. When autoSelectFamily was enabled and the first address-family attempt failed, the socket reinitialization path reused a stale TLS upgrade hook tha...

PT-2026-44129

Name of the Vulnerable Software and Affected Versions Deno versions 2.0.0 through 2.7.7 Description A flaw in the Node.js tls compatibility layer can cause a TLS client to transmit application data in plaintext after a connection retry. This occurs when the autoSelectFamily variable is enabled an...