CVE-2026-47874

EUVD-2026-66831
The vulnerability occurs when a client sends HTTP/1.1 pipelined requests over a single connection, causing the Reactor Netty HTTP server to consume an excessive amount of memory.
Reactor Netty 1.3.0 - 1.3.6
Reactor Netty 1.1.0 - 1.2.18
Reactor Netty 1.0.52 and earlier
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 32.52%
Affected Products (NVD)
VendorProductVersion
pivotalreactor_netty
𝑥
< 1.0.53
pivotalreactor_netty
1.1.0 ≤
𝑥
< 1.2.19
pivotalreactor_netty
1.3.0 ≤
𝑥
< 1.3.6.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://spring.io/security/cve-2026-47874