CVE-2026-50011
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, RedisArrayAggregator pre-allocates ArrayList with initial capacity equal to the RESP array element count declared in an array header. That count is taken from the wire before the corresponding child messages exist. A small malicious header can claim a huge initial capacity. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| netty | netty | >= 4.2.0.Final, < 4.2.15.Final | affected |
| netty | netty | < 4.1.135.Final | affected |
Weaknesses
- CWE-400: CWE-400: Uncontrolled Resource Consumption
- CWE-770: CWE-770: Allocation of Resources Without Limits or Throttling
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
netty-codec-redis: Netty: Denial of Service via malicious Redis array header
Additional References
- https://access.redhat.com/security/cve/CVE-2026-50011
- https://bugzilla.redhat.com/show_bug.cgi?id=2488413
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50011.json
References
- https://github.com/netty/netty/security/advisories/GHSA-5w86-c3rq-vjj7
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
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