Signal is active with 1 mentions in latest observed window
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NVD description
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode() reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates `ctx.alloc().buffer(handshakeLength)` (line 161). The guard at line 140 is `handshakeLength > maxClientHelloLength && maxClientHelloLength != 0`, and the commonly-used SniHandler/AbstractSniHandler constructors (SniHandler(Mapping), SniHandler(AsyncMapping), AbstractSniHandler()) pass maxClientHelloLength=0 and handshakeTimeoutMillis=0, so the length guard is disabled and no timeout is scheduled. A 16 MiB request exceeds the default pooled chunk size and becomes a huge/unpooled allocation performed immediately. The buffer is retained in the handler until the channel closes. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-45416 Memory Exhaustion in Netty SslClientHelloHandler Prior to Versions http://4.1.135.Final and http://4.2.15.Final https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-45416
Post summary
The note highlights a memory exhaustion issue in Netty’s SslClientHelloHandler affecting older releases, providing a vulnerability type and affected versions, but no PoC, exploit, patch, or active exploitation details.
🔴 Netty (ionetty:netty-handler), Uncontrolled Memory Allocation, #CVE-2026-45416 (High severity) -DC-Jun2026-300 https://dailycve.com/netty-ionettynetty-handler-uncontrolled-memory-allocation-cve-2026-45416-high-severity-dc-jun2026-300/
Post summary
DailyCVE reports a high‑severity uncontrolled memory allocation vulnerability in Netty (ionetty:netty-handler) identified as CVE‑2026‑45416.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | netty | netty | - | - | - |