---
id: CVE-2026-104714
title: >-
  Concurrent execution using shared resource with improper synchronization
  ('race condition') vulnerability in Apache Struts
summary: >-
  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 applica…
severity: none
cwe:
  - CWE-362
vendor: Apache Software Foundation
product: 'org.apache.struts:struts2-core'
affected:
  - 'org.apache.struts:struts2-core >= 2.0.0 <= 2.3.37'
  - 'org.apache.struts:struts2-core >= 2.5.0 <= 2.5.33'
  - 'org.apache.struts:struts2-core >= 6.0.0 <= 6.11.0'
  - 'org.apache.struts:struts2-core >= 7.0.0 <= 7.3.0'
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T20:17:09.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104714'
references:
  - url: 'https://cwiki.apache.org/confluence/display/WW/S2-078'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/10/05/13'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T19:30:59.978Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.