artemis-server: artemis-jms-client: artemis-core-client: undertow-core: wildfly-messaging-activemq-subsystem: artemis messaging handlers in Red Hat EAP permit deserialization by default

EAP's Artemis deserialization configuration permits deserialization by default. ObjectMessage.getObject uses ObjectInputStreamWithClassLoader, which implements allow-list/block-list filtering via its checkSecurity/isTrustedType method. However, by default both allow-list and block-list are empty...

undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery

the Undertow AJP listener honours forged sslcert and isssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP...

artemis-server: undertow-core: wildfly-messaging-activemq-subsystem: artemis core protocol permits unauthed queue creation

Artemis CORE protocol channel allows unauthed queue creation. an unauthenticated attacker can send CREATEQUEUE packets on channel 1 via the :8080 HTTP-upgrade path to create arbitrary durable JMS queues on the embedded broker. This can be used for resource exhaustion and persistent broker-state...

undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap

A flaw was found in the ChunkReader component of the Undertow HTTP server, which is used by WildFly and JBoss EAP to handle chunked transfer encoding. The issue occurs because the parser uses a single internal variable to store both the remaining chunk size and state flags. By sending a specially...

undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery

the Undertow AJP listener honours forged sslcert and isssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP...

undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery

the Undertow AJP listener honours forged sslcert and isssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP...

artemis-server: undertow-core: wildfly-messaging-activemq-subsystem: artemis core protocol permits unauthed queue creation

Artemis CORE protocol channel allows unauthed queue creation. an unauthenticated attacker can send CREATEQUEUE packets on channel 1 via the :8080 HTTP-upgrade path to create arbitrary durable JMS queues on the embedded broker. This can be used for resource exhaustion and persistent broker-state...

CVE-2026-5680 Undertow-core: undertow: denial of service via websocket permessage-deflate processing

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer method using exponential doubling,...

undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery

the Undertow AJP listener honours forged sslcert and isssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP...

undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

CVE-2026-15561 Undertow-core: oom via missing limits in chunked trailer in eap's undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

CVE-2026-15561 Undertow-core: oom via missing limits in chunked trailer in eap's undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without...

HTTP Request Smuggling

Overview io.undertow:undertow-core is a Java web server based on non-blocking IO. Affected versions of this package are vulnerable to HTTP Request Smuggling via discrepancies in the parsing of HTTP header names. An attacker can bypass security controls and access unauthorized resources by sending...

HTTP Request Smuggling

Overview io.undertow:undertow-core is a Java web server based on non-blocking IO. Affected versions of this package are vulnerable to HTTP Request Smuggling due to incorrect handling of white-spaces in HTTP request headers. An attacker can gain unauthorized access to restricted information or...

HTTP Request Smuggling

Overview io.undertow:undertow-core is a Java web server based on non-blocking IO. Affected versions of this package are vulnerable to HTTP Request Smuggling via the proxy server. An attacker can gain unauthorized access or manipulate web requests by sending specially crafted header block...

Allocation of Resources Without Limits or Throttling

Overview io.undertow:undertow-core is a Java web server based on non-blocking IO. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the MultiPartParserDefinition multipart parsing process in MultiPartParserDefinition.java. An attacker can...

undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without...

Important: Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update

A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...