CVE-2026-47874Reactor Netty HTTP Server Denial of Service With Pipelined Requests
Updated under an hour ago ()
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It affects Spring Reactor Netty and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- vmware
- NVD analysis
- Analyzed
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Spring Reactor Netty spring:reactor_netty (from the name) | from 1.3.0 through 1.3.6; from 1.1.0 through 1.2.18; through 1.0.52 | CNA record |
pivotal reactor_netty pivotal:reactor_netty | before 1.0.53; from 1.1.0 before 1.2.19; from 1.3.0 before 1.3.6.1 | NVD |
References
- https://spring.io/security/cve-2026-47874vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.