Unsynchronized Access to Shared Data in a Multithreaded Context Affecting org.apache.struts:struts2-core package, versions [2.0.0,6.12.0)[7.0.0,7.4.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Oct 2026
- disclosed5 Oct 2026
- creditn0mi1k
Introduced: 5 Oct 2026
NewCVE-2026-104714 (opens in a new tab)How to fix?
Upgrade org.apache.struts:struts2-core to version 6.12.0, 7.4.0 or higher.
Overview
org.apache.struts:struts2-core is a popular open-source framework for developing web applications in the Java programming language.
Affected versions of this package are vulnerable to Unsynchronized Access to Shared Data in a Multithreaded Context via the buildMessageFormat function in AbstractLocalizedTextProvider. When concurrently served requests format a localized message containing a date or time argument, the shared MessageFormat can mix arguments between responses or throw an exception, exposing one user’s value in another user’s response or causing a server error. Applications whose localized messages do not format date or time arguments are not affected.