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High severity · published Oct 5, 2026
CVE-2026-104714
Apache Struts: Shared message formatter exposes date and time values across concurrent requests
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ST
Struts · Apache
2.0.0 through 2.3.37; 2.5.0 through 2.5.33; 6.0.0 through 6.11.0; 7.0.0 through 7.3.0 · source: vendor, NVD
Affected product
ST
Struts
Apache
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104714
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104714
vendor-advisory
https://cwiki.apache.org/confluence/display/WW/S2-078
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