CVE-2026-104714 Apache Struts: Shared message formatter exposes date and time values across concurrent requests
Concurrent requests sharing a message formatter can leak user data or cause server errors in Apache Struts applications using localized date/time formatting.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104714?
CVE-2026-104714 is a high-severity vulnerability in Apache Struts, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-104714?
It affects 1 product.
Products include Apache Struts.
How do I fix CVE-2026-104714?
No fix has been published for CVE-2026-104714 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-104714 being exploited?
There is no known exploitation of CVE-2026-104714 in the wild and no public exploit code.
Other vulnerabilities in Apache Struts
Sources
Also known as GHSA-5fhf-r6vm-6wj7.