CVE-2026-33870High· 7.5▾ MidnightPoC availableNetty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request s…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.3 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.6%
Last analysed / modified upstream
Exploit / PoC code exists
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
netty < 4.1.132netty >= 4.2.0, < 4.2.10Upgrade past the affected range:
netty 4.2.10Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-42584High· 7.3Netty is an asynchronous, event-driven network application framework
CVE-2026-42581Medium· 5.8Netty is an asynchronous, event-driven network application framework
CVE-2026-42587High· 7.5Netty is an asynchronous, event-driven network application framework
CVE-2026-50010High· 7.5Netty is a network application framework for development of protocol servers and clients
CVE-2026-45416High· 7.5Netty is a network application framework for development of protocol servers and clients
CVE-2026-44249High· 8.1Netty is a network application framework for development of protocol servers and clients