CVE-2026-73632: CWE-567 Unsynchronized Access to Shared Data in a Multithreaded Context in Apache Software Foundation Apache Struts
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type 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.
AI Analysis
Technical Summary
This vulnerability involves unsynchronized access to per-response serialization state in the JSON plugin of Apache Struts 7.2.1, specifically within the SMD / JSON-RPC handling of the JSON interceptor. Because this component is not enabled by default, only applications explicitly using this feature are affected. The flaw can cause response data from one user session to be exposed to another concurrent session, leading to potential data leakage between sessions. The issue is resolved by upgrading to version 7.3.0.
Potential Impact
The vulnerability can lead to exposure of response content from one request to another concurrent request, potentially leaking sensitive data across user sessions. However, the impact is limited to applications using the SMD / JSON-RPC handling of the JSON interceptor, which is not enabled by default. Applications using the standard json result type are not affected.
Mitigation Recommendations
Users should upgrade Apache Struts from version 7.2.1 to version 7.3.0, where this vulnerability is fixed. Since the affected feature is not enabled by default, disabling the SMD / JSON-RPC JSON interceptor can also mitigate exposure risk if upgrading is not immediately possible.
CVE-2026-73632: CWE-567 Unsynchronized Access to Shared Data in a Multithreaded Context in Apache Software Foundation Apache Struts
Description
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type 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.
Affected software
pkg:maven/org.apache.struts/struts2-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves unsynchronized access to per-response serialization state in the JSON plugin of Apache Struts 7.2.1, specifically within the SMD / JSON-RPC handling of the JSON interceptor. Because this component is not enabled by default, only applications explicitly using this feature are affected. The flaw can cause response data from one user session to be exposed to another concurrent session, leading to potential data leakage between sessions. The issue is resolved by upgrading to version 7.3.0.
Potential Impact
The vulnerability can lead to exposure of response content from one request to another concurrent request, potentially leaking sensitive data across user sessions. However, the impact is limited to applications using the SMD / JSON-RPC handling of the JSON interceptor, which is not enabled by default. Applications using the standard json result type are not affected.
Mitigation Recommendations
Users should upgrade Apache Struts from version 7.2.1 to version 7.3.0, where this vulnerability is fixed. Since the affected feature is not enabled by default, disabling the SMD / JSON-RPC JSON interceptor can also mitigate exposure risk if upgrading is not immediately possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-13T11:51:41.735Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a804609bf8831d539f35a82
Added to database: 08/15/2026, 10:57:13 UTC
Last enriched: 08/15/2026, 11:14:25 UTC
Last updated: 08/15/2026, 13:00:00 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.