CVE-2026-50011
Netty has unbounded pre-allocation in RedisArrayAggregator from RESP array length
- State
- Published
- Severity
- 7.5 High
- Published
- Jun 12, 2026
- Updated
- Sep 18, 2026
- Reserved
- Jun 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
nettynetty |
|
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
- https://access.redhat.com/security/cve/CVE-2026-50011vdb-entry
- RHBZ#2488413issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50011.json
- https://access.redhat.com/errata/RHSA-2026:53644vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53645vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53646vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:41951vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50085vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:37390vendor-advisory
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