CVE-2026-73631: Apache Struts: Shared parsing state in the JSON plugin
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-request parsing state could be shared across concurrent requests, allowing data associated with one request to become observable in another, and configured parsing limits not to be enforced as intended. Populating actions from a JSON request body is not enabled by default; applications that do not use the JSON plugin are not affected.
This issue affects Apache Struts: 7.2.1.
Users are recommended to upgrade to version 7.3.0, which fixes the issue.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Strutsto a version that resolves this vulnerability.Fixed in 7.3.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-73631?
The severity of CVE-2026-73631 is classified as risk 37.
What type of vulnerability is CVE-2026-73631?
CVE-2026-73631 is an exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts.
How do I fix CVE-2026-73631?
To fix CVE-2026-73631, upgrade to the latest version of Apache Struts that addresses this vulnerability.
What impact does CVE-2026-73631 have on application security?
CVE-2026-73631 allows for the possibility of data associated with one request being observable in another concurrent request, compromising data integrity.
Is CVE-2026-73631 a known issue in earlier versions of Apache Struts?
Yes, CVE-2026-73631 is a known issue that affects earlier versions of Apache Struts utilizing the JSON plugin.