Concurrent execution using shared resource with improper synchronization ('race condition') vulnerability in Apache Struts. (CVE-2026-104714)
Description
A race condition vulnerability exists in Apache Struts where concurrent requests share a date/time formatter without proper synchronization. This can cause data leakage between users or server errors during rendering. The issue affects specific versions of Apache Struts and is fixed in versions 6.12.0 and 7.4.0.
CVSS v3.1
Score 8.8high
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
CVE-2026-104714 describes a concurrency issue in Apache Struts involving improper synchronization of a shared date/time formatter used in localized message formatting. When multiple requests are served concurrently, the shared formatter can cause one user's data to appear in another user's response or cause rendering failures resulting in server errors. The vulnerability affects Apache Struts versions from 2.0.0 through 2.3.37, 2.5.0 through 2.5.33, 6.0.0 through 6.11.0, and 7.0.0 through 7.3.0. The issue is resolved in versions 6.12.0 and 7.4.0.
Potential Impact
Exploitation of this vulnerability can lead to unauthorized data disclosure between users and potential denial of service due to server errors during rendering. The CVSS v3.1 score is 8.8 (high), indicating significant confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Users should upgrade affected Apache Struts versions to 6.12.0 or 7.4.0 where the issue is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5fhf-r6vm-6wj7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104714"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac523762cdf04f656c4bf47
Added to database: 10/06/2026, 16:36:06 UTC
Last enriched: 10/06/2026, 16:48:28 UTC
Last updated: 10/07/2026, 03:48:07 UTC
Views: 12
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