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dotnet · dotnet/runtime · v8.0.28Good to know

dotnet/runtime v8.0.28: WebSocket fix, JIT fix, CRL cache, QUIC update

Release v8.0.28 of dotnet/runtime includes multiple fixes and dependency updates: WebSocket Server now denies unmasked frame receive; JIT loop cloning bug fix f

10 Jun 2026Read 1 minSeverity: good to know

What changed

Release v8.0.28 of dotnet/runtime includes multiple fixes and dependency updates: WebSocket Server now denies unmasked frame receive; JIT loop cloning bug fix for down-counting loops; in-memory cache for CRLs on Linux; QUIC MsQuic update; dump collection performance improvements; various dependency updates and build changes.

Who it affects

Developers using .NET 8.0 runtime, especially those using WebSocket Server, JIT compilation, QUIC, or Linux CRL handling.

What to do today

Update to .NET 8.0.28 to benefit from fixes and improvements.

The trail
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