CVE-2026-50011
Netty has unbounded pre-allocation in RedisArrayAggregator from RESP array length
HIGH 7.5EPSS 0.8%
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
- netty
- CVSS v3.1 CNA
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.85% chance of exploitation in the next 30 days, 57th percentile
- Published
- 2026-06-12
- Updated
- 2026-09-18
Proof-of-concept exploits (2)
- bibotai/secveri-cve-2026-50011-positive0★ · 2026-07-16
- bibotai/secveri-cve-2026-50011-negative0★ · 2026-07-16
Security advisories
- netty/netty/security/advisories/GHSA-5w86-c3rq-vjj7
- advisories/GHSA-5w86-c3rq-vjj7
- netty/netty/releases/tag/netty-4.2.15.Final