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...

PT-2026-95362

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw exists in the HTTP/2 HpackEncoder. A remote attacker can trigger a Denial of Service DoS by sending HTTP/2 SETTINGS frames containing an excessively large MAX HEADER TABLE SIZE. This...

PT-2026-95421

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw exists where the HTTP-object conversion path incorrectly processes specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests as regular HTTP/1.1 CONNECT requests. This misinterpretati...

PT-2026-95511

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw in the HTTP/2 stack allows a remote attacker to inject prohibited characters, including NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validatio...

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-2026-93567: 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-2026-71418: Inefficient Algorithmic Complexity

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer...

CVE-2026-93492: Undefined Security Weakness

A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAXHEADERTABLESIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimatel...

CVE-2026-93579: Undefined Security Weakness

A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary,...

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...

GHSA-5GPM-RGJ3-9Q76 Skipper has OPA body-authz bypass: truncated_body mitigation fails open on chunked/HTTP-2 (incomplete fix GHSA-8qqm-fp2q-v734)

Affected component: filters/openpolicyagent/openpolicyagent.go → ExtractHttpBodyOptionally; combined with github.com/open-policy-agent/opa-envoy-plugin envoyauth/request.go → getParsedBody / checkIfHTTPBodyTruncated. Filter: opaAuthorizeRequestWithBody. - Affected versions: = 0.27.33 current HEAD...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

Important: Red Hat Security Advisory: tomcat security update

An update for tomcat 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-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

Security Bulletin: IBM Financial Transaction Manager is impacted by multiple vulnerabilities in RedHat Proxy for Kubernetes RBAC authorization

Summary IBM Financial Transaction Manager for RedHat OpenShift has addressed the following vulnerabilities. Vulnerability Details CVEID:CVE-2026-33814 DESCRIPTION: When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

SUSE-SU-2026:23874-1 Security update for google-guest-agent

This update for google-guest-agent fixes the following issues: - CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header bsc1260264. - CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass an...