Data Exposure Vulnerability in JSON Plugin of Apache Struts
CVE-2026-73631

4.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Struts
Vendor
CVE Published:
15 August 2026

What is CVE-2026-73631?

This vulnerability involves the exposure of sensitive data by sharing the per-request parsing state across concurrent requests in the JSON plugin of Apache Struts. As a result, data from one request can inadvertently be accessible in another, compromising the integrity and confidentiality of the application. Although JSON request body population is not enabled by default, it is critical for users of affected versions to upgrade to 7.3.0 to remediate this issue. Applications that do not utilize the JSON plugin remain unaffected.

Affected Version(s)

Apache Struts 7.2.1

References

https://cwiki.apache.org/confluence/display/WW/S2-070
vendor-advisory

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

g0w6y (https://github.com/g0w6y)
.