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CVE-2026-42403— Apache Neethi: Circular Policy Reference Infinite Loop

Quick assessment

Affected
Apache Software Foundation Apache Neethi
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.

Apache Neethi是Apache基金会的一个策略处理框架库。 Apache Neethi存在资源管理错误漏洞，该漏洞源于未正确检测策略定义中的循环引用，可能导致策略规范化过程进入无限循环或过度递归，导致堆栈溢出或应用挂起。

CVSS 7.5 · High EPSS 0.76% · P52

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Neethi < 3.2.2 affected
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I. Basic Information for CVE-2026-42403

Vulnerability Information
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Vulnerability Title
Apache Neethi: Circular Policy Reference Infinite Loop
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Neethi does not properly detect circular references in policy definitions. When a WS-Policy document contains circular policy references (where Policy A references Policy B which references Policy A), the policy normalization process can enter an infinite loop or cause excessive recursion, leading to a stack overflow or application hang. An attacker can craft malicious policy documents with circular references to cause a Denial of Service condition Users are recommended to upgrade to version 3.2.2, which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Neethi 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Neethi是Apache基金会的一个策略处理框架库。 Apache Neethi存在资源管理错误漏洞，该漏洞源于未正确检测策略定义中的循环引用，可能导致策略规范化过程进入无限循环或过度递归，导致堆栈溢出或应用挂起。
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
Apache Software Foundation Apache Neethi 0 ~ 3.2.2 -

II. Public POCs for CVE-2026-42403

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III. Intelligence Information for CVE-2026-42403

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Mailing List Discussions for CVE-2026-42403 (1)

Same Patch Batch · Apache Software Foundation · 2026-05-01 · 5 CVEs total

CVE-2026-42778 9.8 CRITICAL Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)
CVE-2026-42779 9.8 CRITICAL Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter
CVE-2026-42402 7.5 HIGH Apache Neethi: Policy Normalization Unbounded Resource Allocation DoS
CVE-2026-42404 6.5 MEDIUM Apache Neethi: Unrestricted HTTP Redirect Following in Policy References

IV. Related Vulnerabilities

Same product: Apache Neethi
Same vendor: Apache Software Foundation
Same weakness: CWE-400

V. Comments for CVE-2026-42403

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