CVE-2026-93568High· 7.5▾ TwilightA flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HT…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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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 Sep 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Last analysed / modified upstream
A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-93567High· 7.5A flaw was found in Netty's HTTP/2 codec
CVE-2026-93579Medium· 6.5A flaw was found in Netty's HTTP/2 stack
CVE-2026-93569High· 8.2A flaw was found in Netty
CVE-2026-93492Medium· 5.3A flaw was found in Netty's HTTP/2 HpackEncoder
CVE-2026-93574Medium· 6.5A flaw was found in Netty's `netty-codec-http` component
CVE-2026-93562Medium· 6.5A flaw was found in Netty's HTTP/1 decoder