Severity: moderate
Affected versions:
- Apache Struts 2.0.0 through 2.3.37
- Apache Struts 2.5.0 through 2.5.33
- Apache Struts 6.0.0 through 6.11.0
- Apache Struts 7.0.0 through 7.3.0
Description:
Concurrent execution using shared resource with improper synchronization ('race
condition') vulnerability in Apache Struts. Where a localized message formats a
date or time argument, the formatter retained for that message by the
application-wide text provider is used by concurrently served requests without
isolation, so a value belonging to one user can appear in another user's
response, or the rendering can fail and surface as a server error. Applications
whose localized messages format no date or time arguments are not affected.
This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through
2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0.
Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the
issue.
Credit:
n0mi1k (finder)
References:
https://cwiki.apache.org/confluence/display/WW/S2-078
https://struts.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-104714
