CVE-2026-93576: Improper Neutralization of CRLF Sequences

A flaw was found in Netty netty-codec-smtp. The component does not properly validate Carriage Return CR and Line Feed LF characters in the SMTP command-name field. A remote attacker, if an application routes untrusted input into this field, can embed CR/LF characters to inject arbitrary SMTP...

PT-2026-95422

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description An issue exists in the HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request contains both an absolute-form request-target and a conflicting Host header, the system incorrectly prioritize...

CVE-2026-93572: Allocation of Resources Without Limits or Throttling

A flaw was found in Netty's RedisArrayAggregator component. A remote attacker can exploit this vulnerability by sending specially crafted nested Redis RESP array headers. This can cause the RedisArrayAggregator to eagerly preallocate a large amount of heap memory, leading to heap memory exhaustio...

CVE-2026-93578: Undefined Security Weakness

A flaw was found in Netty's Online Certificate Status Protocol OCSP Client. The client fails to verify the 'id-kp-OCSPSigning' Extended Key Usage EKU in OCSP responder certificates. A remote attacker, holding any valid certificate issued by the same Certificate Authority CA, can exploit this by...

CVE-2026-93569: Inconsistent Interpretation of HTTP Requests

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2...

CVE-2026-93568: Improper Input Validation

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...

CVE-2026-93560: Undefined Security Weakness

A flaw was found in the Netty STOMP codec. A remote attacker could send a specially crafted STOMP frame with a content-length header exceeding the maximum integer value. This integer truncation vulnerability could lead to an infinite decode loop, causing a Denial of Service DoS by exhausting memo...

CVE-2026-93491: Allocation of Resources Without Limits or Throttling

A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withholding reads. This action causes the methodOverflowQueue to grow without limit, leading to unbounded heap memory consumpti...

PT-2026-95358

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw exists in the Online Certificate Status Protocol OCSP Client, which is a protocol used for obtaining the real-time revocation status of digital certificates. The client fails to verify t...

CVE-2026-93558: Undefined Security Weakness

A flaw was found in Netty's WebSocketServerExtensionHandler. A remote, unauthenticated attacker can exploit this vulnerability by using HTTP/1.1 pipelining to send requests faster than the application can respond. This leads to an unbounded growth of a per-connection queue, consuming excessive...

PT-2026-95697

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw in the HTTP/1 decoder allows remote attackers to perform HTTP request smuggling due to incomplete validation of malformed Transfer-Encoding headers. By sending specially crafted HTTP...

PT-2026-95400

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description An issue exists in the RtspDecoder where the RtspMethods.valueOf function incorrectly strips trailing control bytes characters with code points = 0x20 from method tokens in Real-Time Streaming...

PT-2026-95420

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw exists in the HTTP/2 codec when converting HTTP/1 CONNECT requests to HTTP/2. The component incorrectly utilizes the Host header instead of the CONNECT authority-form request-target to...

CVE-2026-93563: Undefined Security Weakness

A flaw was found in Netty's SmtpResponseDecoder component. A remote attacker, acting as a malicious or man-in-the-middle MITM SMTP server, could exploit this by sending a specially crafted, unbounded multi-line SMTP response without a terminator. This vulnerability leads to unbounded memory...

CVE-2026-93567: Improper Input Validation

A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leadi...

CVE-2026-93494: Undefined Security Weakness

A flaw was found in Netty's StompSubframeDecoder component. A remote attacker can exploit this vulnerability by sending a specially crafted STOMP frame body without its terminating null byte. This causes the decoder to allocate a ByteBuf a buffer for bytes that is never released, leading to a...

CVE-2026-93573: Inconsistent Interpretation of HTTP Requests

A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass Transfer-Encoding header validation by splitting the Transfer-Encoding field across multiple headers, with the last field containing a non-final transfer coding like gzip or deflate. This bypass ca...

CVE-2026-93564: Undefined Security Weakness

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-93575: Undefined Security Weakness

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93562: Undefined Security Weakness

A flaw was found in Netty's HTTP/1 decoder. Incomplete validation of malformed Transfer-Encoding headers allows a remote attacker to perform HTTP request smuggling. By sending specially crafted HTTP requests, an attacker can inject arbitrary HTTP requests, potentially bypassing security controls ...