Advisory severityMedium4.3Apache Software Foundation

Medium [CVE-2026-73631] Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts

This medium-severity Apache Software Foundation advisory covers CVE-2026-73631 affecting Apache Struts.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-73631 Source published Aug 15, 2026Source updated Aug 18, 2026

VulniPulse record published Aug 15, 2026Record updated Aug 18, 2026

CVE-2026-73631

Affected products & platforms

Apache Software FoundationStruts

Open source advisory

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Summary

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 versions

7.2.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

7.3.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 7.3.0, which fixes the issue.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-73631 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-73631NVD CVE.org MITRE

Official resources

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Apache project downloads (fixed releases)
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