CVE-2026-73632
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
The JSON plugin of Apache Struts is vulnerable to exposure of data element to wrong session. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type are not affected.
Risk Assessment
Risk of data leakage between user sessions, potentially leading to exposure of sensitive information.
Recommendation
Upgrade Apache Struts to version 7.3.0, which fixes the issue.
Other vulnerabilities in Apache Struts
See all- CVE-2016-3090High
The TextParseUtil.translateVariables method in Apache Struts 2.x before version 2.3.20 allows remote attackers to execute arbitrary code via a crafted OGNL expression using ANTLR tooling.
- CVE-2016-4461High
Apache Struts 2.x before version 2.3.29 allows remote attackers to execute arbitrary code via a "%{}" sequence in a tag attribute, known as forced double OGNL evaluation.
- CVE-2017-9804High
In Apache Struts versions 2.3.7 through 2.3.33 and 2.5 through 2.5.12, it is possible to prepare a special URL that can overload the server process during URL validation in a form. This issue exists due to an incomplete fix for S2-047 / CVE-2017-7672.
- CVE-2015-5209High
Apache Struts 2.x before version 2.3.24.1 allows remote attackers to manipulate Struts internals, which may lead to altering user sessions or affecting container settings.
- CVE-2017-9787High
Using Spring AOP functionality to secure Struts actions can lead to a DoS attack.
- CVE-2016-4433High
Apache Struts 2 versions 2.3.20 through 2.3.28.1 allows remote attackers to bypass intended access restrictions and conduct redirection attacks via a crafted request.
- CVE-2016-4431High
Apache Struts 2 versions 2.3.20 through 2.3.28.1 allow remote attackers to bypass intended access restrictions and conduct redirection attacks by leveraging a default method.
- CVE-2016-4430High
Apache Struts 2 versions 2.3.20 through 2.3.28.1 mishandle token validation, allowing remote attackers to conduct cross-site request forgery (CSRF) attacks via unspecified vectors.
- CVE-2016-0785High
Apache Struts 2.x before version 2.3.28 allows remote attackers to execute arbitrary code via a "%{}" sequence in a tag attribute, known as forced double OGNL evaluation.
- CVE-2015-1831High
The default exclude patterns (excludeParams) in Apache Struts 2.3.20 allow remote attackers to compromise internal state of an application via unspecified vectors.
Original NVD description (English source)
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type 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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS