HTTP CONNECT Tunnel Authority Validation Bypass

io.netty:netty-codec-http3 is vulnerable to HTTP CONNECT tunnel authority validation bypass. The vulnerability is due to incorrect parsing and conversion of HTTP/1 CONNECT requests in HttpConversionUtil.toHttp3Headers, which allows a remote attacker to manipulate the Host header to specify an...

Denial Of Service (DoS)

io.netty:netty-codec-http3 is vulnerable to Denial of service DoS. The vulnerability is due to QPACK encoder state being retained without limits or being released when HTTP/3 streams complete, which allows a remote, unauthenticated attacker to exhaust server memory by sending sequential HTTP/3...

ROOT-APP-MAVEN-AIKIDO-2026-110281 AIKIDO-2026-110281 in io.netty:netty-codec-http3 - Patched by Root

Root has patched AIKIDO-2026-110281 in the io.netty:netty-codec-http3 package for Root:Maven. Multiple fixed versions available...

PT-2026-116581

Root has patched AIKIDO-2026-110281 in the io.netty:netty-codec-http3 package for Root:Maven. Multiple fixed versions available...

Linux Distros Unpatched Vulnerability : CVE-2026-100659

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-100663

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-100662

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 QPAC...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Insert With Literal Name handling in QpackEncoderHandler.java, which accepts a declared string-literal length of up to roughly 2 GiB for both the name line 141 and the value li...

ai.catboost:catboost-spark_4.0_2.13 (1.2.10), ai.catboost:catboost-spark_4.1_2.13 (1.2.10) +3475 more potentially affected by CVE-2026-100662 via io.netty:netty-codec-http3 (>=4.2.2.final, <=4.2.17.final)

io.netty:netty-codec-http3 MAVEN version =4.2.2.final, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-100662 Source advisory: SNYK:JAVA-IONETTY-20158603...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in its HTTP/3 request header handling, which does not enforce the RFC 9114 section 4.3.1 requirement that an :authority pseudo-header and a literal host header field carry the same value when both are present. An...

ai.catboost:catboost-spark_4.0_2.13 (1.2.10), ai.catboost:catboost-spark_4.1_2.13 (1.2.10) +3475 more potentially affected by CVE-2026-100663 via io.netty:netty-codec-http3 (>=4.2.2.final, <=4.2.17.final)

io.netty:netty-codec-http3 MAVEN version =4.2.2.final, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-100663 Source advisory: SNYK:JAVA-IONETTY-20158598...

ai.catboost:catboost-spark_4.0_2.13 (1.2.10), ai.catboost:catboost-spark_4.1_2.13 (1.2.10) +3475 more potentially affected by CVE-2026-100659 via io.netty:netty-codec-http3 (>=4.2.2.final, <=4.2.17.final)

io.netty:netty-codec-http3 MAVEN version =4.2.2.final, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-100659 Source advisory: SNYK:JAVA-IONETTY-20154842...

ai.catboost:catboost-spark_4.0_2.13 (1.2.10), ai.catboost:catboost-spark_4.1_2.13 (1.2.10) +3475 more potentially affected by CVE-2026-100661 via io.netty:netty-codec-http3 (>=4.2.2.final, <=4.2.17.final)

io.netty:netty-codec-http3 MAVEN version =4.2.2.final, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-100661 Source advisory: SNYK:JAVA-IONETTY-20154840...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in QpackUtil.decodePrefixedInteger, which places no bound on continuation bytes, unlike the HPACK decoder that stops at shift == 56, so an unterminated run returns -1 for buffer...

ai.catboost:catboost-spark_4.0_2.13 (1.2.10), ai.catboost:catboost-spark_4.1_2.13 (1.2.10) +3475 more potentially affected by CVE-2026-100660 via io.netty:netty-codec-http3 (>=4.2.2.final, <=4.2.17.final)

io.netty:netty-codec-http3 MAVEN version =4.2.2.final, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.3.0, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-100660 Source advisory: SNYK:JAVA-IONETTY-20154839...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the streamSectionTrackers map of QpackEncoder, populated by encodeHeaders, which keeps a queue and dynamic-table index tracker for every encoded field section that references the...

CVE-2026-100661

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-2026-100662

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...

CVE-2026-100664

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 —...

CVE-2026-100661

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...