CVE-2026-44890Netty has Unbounded Direct Memory Consumption in its RedisDecoder
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No exploitation reported and no EPSS estimate yet.
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Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple connections without `\r\n`. This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400, CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Modified
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
netty netty netty:netty (from the name) | from 4.2.0.Final, < 4.2.15.Final; before 4.1.135.Final | CNA record |
Red Hat Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 redhat:apache_camel_spring_boot | from codec-redis not affected | CISA ADP |
Red Hat Red Hat Data Grid 8.6.2 redhat:jboss_data_grid | from codec-redis not affected | CISA ADP |
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 redhat:jboss_enterprise_application_platform_els | from 0:2.16.0-22.redhat_00057.1.el7eap not affected | CISA ADP |
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 redhat:jboss_enterprise_application_platform_xp | from codec-redis not affected | CISA ADP |
Red Hat Red Hat Fuse 7 redhat:jboss_fuse | 7 | CISA ADP |
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp | All versions | CISA ADP |
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on | 7 | CISA ADP |
netty netty netty:netty | before 4.1.135; from 4.2.0 before 4.2.15 | NVD |
References
- https://github.com/netty/netty/security/advisories/GHSA-6ghj-frrj-jjj3x-refsource-confirm, vendor-advisory
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Finalx-refsource-misc, release-notes
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Finalx-refsource-misc, release-notes
- https://access.redhat.com/errata/RHSA-2026:37390
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:50085
- https://access.redhat.com/errata/RHSA-2026:53644
- https://access.redhat.com/errata/RHSA-2026:53645
- https://access.redhat.com/errata/RHSA-2026:53646
- https://access.redhat.com/security/cve/CVE-2026-44890
- https://bugzilla.redhat.com/show_bug.cgi?id=2488053
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44890.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.