CVE-2026-47874CWE-770denial-of-service

CVE-2026-47874

Medium · published August 27, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
33.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00402 · 33.3th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-08-27T05:17Z
Affected products (3)
ProductVersionsFixed in
pivotal/reactor_netty< 1.0.531.0.53
pivotal/reactor_netty≥ 1.1.0, < 1.2.191.2.19
pivotal/reactor_netty≥ 1.3.0, < 1.3.6.11.3.6.1
References (1)
https://spring.io/security/cve-2026-47874 · [email protected]
EPSS history
Timeline
  • 28 AUG 06:43Z
    EPSS moved — → 0%
    epss
  • 26 AUG 23:49Z
    Reactor Netty HTTP Server Denial of Service With Pipelined Requests
    cvelistv5