CVE-2026-73631

Medium

Description

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.

SeverityMedium

CVSS4.3

Exploit probability—

Product

Apache Struts

PublishedAug 15, 2026

First seenAug 15, 2026

Weakness typeCWE-567CWE-567

How to fix

Vendor advisories

cwiki.apache.org/confluence/display/WW/S2-070

Affected products

Product	Affected versions	Fixed in
apache struts	7.2.1	—

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