CVE-2026-100660

The Netty HTTP/3 codec (io.netty:netty-codec-http3) versions 4.2.0.Final through 4.2.17.Final are vulnerable to a denial of service (DoS) due to unbounded per-stream QPACK encoder state retention. The QpackEncoder stores a queue and a dynamic-table index tracker for every encoded field section re...

EUVD-2026-87754

Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.0.Final through 4.2.17.Final retains unbounded per-stream QPACK encoder state. QpackEncoder stores a queue and a dynamic-table index tracker for every encoded field section that references the QPACK dynamic table, keyed by the peer-controll...

CVE-2026-100660

Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.0.Final through 4.2.17.Final retains unbounded per-stream QPACK encoder state. QpackEncoder stores a queue and a dynamic-table index tracker for every encoded field section that references the QPACK dynamic table, keyed by the peer-controll...

CVE-2026-100659

Netty's HTTP/3 codec (io.netty:netty-codec-http3 ) in versions 4.2.0.Final through 4.2.17.Final fails to enforce the RFC 9114 requirement that the :authority pseudo-header and a literal host header must carry the same value. A remote unauthenticated peer can submit a HEADERS frame with conflictin...

CVE-2026-100659

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100659 Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

EUVD-2026-87753

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100659 Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100659 Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100664: Improper Input Validation

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.2.Final through 4.2.17.Final builds the HTTP/3 :authority pseudo-header from the HTTP/1 Host header before considering the authority of an absolute-form HTTP/1 request-target. In HttpConversionUtil.toHttp3HeadersHttpMessage, boolean —...

PT-2026-99332

Name of the Vulnerable Software and Affected Versions netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final Description A denial-of-service issue exists in the QPACK prefixed-integer decoder QpackUtil.decodePrefixedInteger that fails to bound the number of continuation bytes processed. A...

CVE-2026-100661: Uncontrolled Resource Consumption

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final contain a denial-of-service vulnerability in the QPACK prefixed-integer decoder QpackUtil.decodePrefixedInteger, which does not bound the number of continuation bytes it will process. A remote, unauthenticat...

CVE-2026-100659: Inconsistent Interpretation of HTTP Requests

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100660: Allocation of Resources Without Limits or Throttling

Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.0.Final through 4.2.17.Final retains unbounded per-stream QPACK encoder state. QpackEncoder stores a queue and a dynamic-table index tracker for every encoded field section that references the QPACK dynamic table, keyed by the peer-controll...

CVE-2026-100663: Improper Input Validation

Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.2.Final through 4.2.17.Final does not special-case HTTP/1 CONNECT authority-form request-targets when converting HTTP/1 messages to HTTP/3 in HttpConversionUtil.toHttp3Headers. The authority-form target e.g., "CONNECT trusted.example:443" i...

CVE-2026-100662: Uncontrolled Resource Consumption

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final contain an uncontrolled resource consumption vulnerability in the QPACK encoder-stream instruction decoder QpackEncoderHandler, installed on the peer-initiated unidirectional QPACK encoder stream, type 0x02...

Wireshark 4.6.x < 4.6.9 Multiple Vulnerabilities (macOS)

The version of Wireshark installed on the remote macOS / Mac OS X host is prior to 4.6.9. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.9 advisory. - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service...

Wireshark 4.6.x < 4.6.9 Multiple Vulnerabilities

The version of Wireshark installed on the remote Windows host is prior to 4.6.9. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.9 advisory. - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service CVE-2026-76879,...

Astra Linux – Vulnerability in Wireshark

The HTTP3 dissector in Wireshark versions 4.6.0 and 4.6.1 allows for denial of service attacks...

RHEL 10 / 9 : Red Hat Ansible Automation Platform 2.7 Product Security and Bug Fix Update (Important) (RHSA-2026:50318)

The remote Redhat Enterprise Linux 10 / 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:50318 advisory. Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers c...