EUVD-2026-62134

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this...

CVE-2026-73890

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of thi...

EUVD-2026-62131

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this...

CVE-2026-73887

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of thi...

httpd: httpd: HTTP/2 Remote Denial of Service via compression bomb and Slowloris-style attack

A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are th...

Important: Red Hat Security Advisory: mod_http2 security update

An update for modhttp2 is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. 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 rating, is...

tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak

A flaw was found in Apache Tomcat. This vulnerability, an uncontrolled resource consumption issue, arises from an allocation leak in the HTTP/2 backlog tracking when a stream is reset. A remote attacker could exploit this to cause a Denial of Service DoS, making the server unresponsive or...

tomcat: Apache Tomcat: Improper Input Validation allows HTTP/2 no-authority bypass of strict SNI validation

A flaw was found in Apache Tomcat. This improper input validation vulnerability, stemming from an incomplete fix for CVE-2026-32990, allows for an HTTP/2 no-authority bypass of strict Server Name Indication SNI validation. This could potentially lead to unauthorized access or misrouting of reques...

RLSA-2026:55804 Moderate: nghttp2 security update

libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 HTTP/2 protocol in C. Security Fixes: nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 For more details about the security issues,...

httpd: httpd: HTTP/2 Remote Denial of Service via compression bomb and Slowloris-style attack

A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are th...

Red Hat Security Advisory 2026-55804-03

Red Hat Security Advisory 2026-55804-03 - An update for nghttp2 is now available for Red Hat Enterprise Linux 8...

PT-2026-78179

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 4.5.0 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to a hang or a frequently...

PT-2026-78185

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 4.5.0 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to unauthorized read access to a...

PT-2026-78223

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 4.5.1 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to a hang or a frequently...

CVE-2026-73896: Improper Access Control

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of thi...

CVE-2026-73890: Improper Access Control

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of thi...

PT-2026-78176

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 4.5.0 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to unauthorized access to critic...

CVE-2026-73935: Improper Access Control

Vulnerability in the Helidon product of Oracle Fusion Middleware component: Imperative Web Server. Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of thi...

PT-2026-78222

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 3.2.19 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to a hang or a frequently...

PT-2026-78225

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon version 4.5.0 Description A flaw in the Imperative Web Server component allows an unauthenticated attacker with network access via HTTP/2 to compromise the system. This can lead to a complete Denial of Service...