CVE-2026-44892
Fixed in a distro release EPSS <1%CVSS 7.5
Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch.
Products: netty
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | io.netty:netty-codec-http3 | 4.2.15.Final |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | apache-hop | 2.18.0-r6 |
| Chainguard | apache-hop-fips | 2.18.0-r4 |
| Chainguard | camunda-8.9 | 8.9.6-r1 |
| Chainguard | camunda-zeebe-8.9 | 8.9.6-r1 |
| Chainguard | celeborn-0.7 | 0.7.0-r2 |
| Chainguard | opensearch-3 | 3.6.0-r7 |
| Chainguard | opensearch-3-discovery-ec2 | 3.8.0-r3 |
| Chainguard | opensearch-3-iamguarded-compat | 3.8.0-r3 |
| Chainguard | opensearch-3-neural-search | no fix |
| Chainguard | opensearch-3-repository-azure | 3.6.0-r7 |
| Chainguard | opensearch-3-security | 3.6.0-r7 |
| Chainguard | opensearch-fips-3 | 3.7.0-r0 |
| Chainguard | opensearch-fips-3-repository-azure | 3.7.0-r0 |
| Chainguard | opensearch-fips-3-security | 3.7.0-r0 |
| Chainguard | spark-4.1-scala-2.13 | 4.1.2-r4 |
| Chainguard | spark-fips-4.1-scala-2.13 | 4.1.2-r3 |
| Chainguard | trino | no fix |
| Chainguard | trino-plugin-bigquery | no fix |
| Chainguard | trino-plugin-delta-lake | 481-r7 |
| Chainguard | trino-plugin-exchange-filesystem | 481-r7 |
| Chainguard | trino-plugin-exchange-hdfs | 481-r7 |
| Chainguard | trino-plugin-hive | 481-r7 |
| Chainguard | trino-plugin-hudi | 481-r7 |
| Chainguard | trino-plugin-iceberg | 481-r7 |
| Chainguard | trino-plugin-lakehouse | 481-r7 |
| Chainguard | trino-plugin-opensearch | no fix |
| Chainguard | trino-plugin-oracle | 483-r7 |
| Chainguard | trino-plugin-pinot | 481-r7 |
| Chainguard | trino-plugin-spooling-filesystem | 481-r7 |
| Chainguard | trino-plugin-teradata-functions | no fix |
| Debian 12 | netty | no fix |
| Debian 13 | netty | no fix |
| Debian 14 | netty | no fix |
| Ubuntu 25.10 | netty | no fix |
| Ubuntu 26.10 | netty | no fix |
| Ubuntu Pro 14.04 LTS | netty | no fix |
| Ubuntu Pro 16.04 LTS | netty | no fix |
| Ubuntu Pro 18.04 LTS | netty | no fix |
| Ubuntu Pro 20.04 LTS | netty | no fix |
| Ubuntu Pro 22.04 LTS | netty | no fix |
| Ubuntu Pro 24.04 LTS | netty | no fix |
| Ubuntu Pro 26.04 LTS | netty | no fix |
| Wolfi | opensearch-3 | 3.6.0-r7 |
| Wolfi | opensearch-3-discovery-ec2 | 3.8.0-r3 |
| Wolfi | opensearch-3-iamguarded-compat | 3.8.0-r3 |
| Wolfi | opensearch-3-neural-search | no fix |
| Wolfi | opensearch-3-repository-azure | 3.6.0-r7 |
| Wolfi | opensearch-3-security | 3.6.0-r7 |
| Wolfi | spark-4.1-scala-2.13 | 4.1.2-r4 |
| Wolfi | trino | no fix |
| Wolfi | trino-plugin-bigquery | no fix |
| Wolfi | trino-plugin-delta-lake | 481-r7 |
| Wolfi | trino-plugin-exchange-filesystem | 481-r7 |
| Wolfi | trino-plugin-exchange-hdfs | 481-r7 |
| Wolfi | trino-plugin-hive | 481-r7 |
| Wolfi | trino-plugin-hudi | 481-r7 |
| Wolfi | trino-plugin-iceberg | 481-r7 |
| Wolfi | trino-plugin-lakehouse | 481-r7 |
| Wolfi | trino-plugin-opensearch | no fix |
| Wolfi | trino-plugin-oracle | 483-r7 |
| Wolfi | trino-plugin-pinot | 481-r7 |
| Wolfi | trino-plugin-spooling-filesystem | 481-r7 |
| Wolfi | trino-plugin-teradata-functions | no fix |