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CVE-2026-73631— Apache Struts: Shared parsing state in the JSON plugin

Quick assessment

Affected
Apache Software Foundation Apache Struts
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 Struts是美国Apache基金会开源的一款基于MVC模式的Java Web应用框架。 Apache Struts 7.2.1版本存在竞争条件问题漏洞，该漏洞源于JSON插件中请求解析状态在并发请求间共享，可能导致数据元素暴露到错误的会话。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.38% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Struts 7.2.1 affected
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I. Basic Information for CVE-2026-73631

Vulnerability Information
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Vulnerability Title
Apache Struts: Shared parsing state in the JSON plugin
Source: CVE Program / CVE List V5
Vulnerability Description
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-request parsing state could be shared across concurrent requests, allowing data associated with one request to become observable in another, and configured parsing limits not to be enforced as intended. Populating actions from a JSON request body is not enabled by default; applications that do not use the JSON plugin are not affected. This issue affects Apache Struts: 7.2.1. Users are recommended to upgrade to version 7.3.0, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在多现场上下文中未能对共享数据进行同步访问
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Struts 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Struts是美国Apache基金会开源的一款基于MVC模式的Java Web应用框架。 Apache Struts 7.2.1版本存在竞争条件问题漏洞，该漏洞源于JSON插件中请求解析状态在并发请求间共享，可能导致数据元素暴露到错误的会话。
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 Struts 7.2.1 -

II. Public POCs for CVE-2026-73631

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III. Intelligence Information for CVE-2026-73631

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Vendor Advisories for CVE-2026-73631 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-15 · 4 CVEs total

CVE-2026-73634 Apache Struts: Unbounded read of a Content Security Policy violation report
CVE-2026-73635 Apache Struts: Unbounded growth of localized-text caches driven by the request locale
CVE-2026-73632 Apache Struts: Shared serialization state in the JSON plugin

IV. Related Vulnerabilities

Same product: Apache Struts
Same vendor: Apache Software Foundation
Same weakness: CWE-567

V. Comments for CVE-2026-73631

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