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CVE-2025-22227— CVE-2025-22227: Authentication Leak On Redirect With Reactor Netty HTTP Client

Quick assessment

Affected
VMware Reactor Netty
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Reactor Netty是基于 Netty 框架的非阻塞和背压就绪的 TCP/HTTP/UDP/QUIC 客户端和服务器。 Reactor Netty存在安全漏洞，该漏洞源于在链式重定向的某些特定场景中，Reactor Netty HTTP客户端会泄露凭证。

CVSS 6.1 · Medium EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API

Affected Version Matrix 4

VendorProduct Version RangeStatus
VMware Reactor Netty 1.0.x< 1.0.49 (Reactor BOM 2020.0.48) affected
1.1.x< 1.1.32 (Reactor BOM 2022.0.27 and 2023.0.20) affected
1.2.x< 1.2.8 (Reactor BOM 2024.0.8) affected
1.3.x< 1.3.0-M5 (Reactor BOM 2025.0.0-M5) affected
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I. Basic Information for CVE-2025-22227

Vulnerability Information
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Vulnerability Title
CVE-2025-22227: Authentication Leak On Redirect With Reactor Netty HTTP Client
Source: CVE Program / CVE List V5
Vulnerability Description
In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Reactor Netty 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Reactor Netty是基于 Netty 框架的非阻塞和背压就绪的 TCP/HTTP/UDP/QUIC 客户端和服务器。 Reactor Netty存在安全漏洞，该漏洞源于在链式重定向的某些特定场景中，Reactor Netty HTTP客户端会泄露凭证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
VMware Reactor Netty 1.0.x ~ 1.0.49 (Reactor BOM 2020.0.48) -

II. Public POCs for CVE-2025-22227

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III. Intelligence Information for CVE-2025-22227

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Vendor Advisories for CVE-2025-22227 (1)

IV. Related Vulnerabilities

Same product: Reactor Netty
Same vendor: VMware

V. Comments for CVE-2025-22227

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