CVE-2026-73632
MEDIUMDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 18% of all known CVEs.
References
Related Vulnerabilities
Other CWE-567 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-44374 | Medium | 6.5 | 0.7% | - | Fix |
| CVE-2020-25724 | Medium | 4.3 | 0.6% | - | Fix |
| CVE-2026-48708 | High | 7.5 | 0.4% | - | - |
| CVE-2026-73631 | Medium | 4.3 | 0.3% | - | - |
| CVE-2025-48908 | Medium | 6.7 | 0.1% | - | - |
| CVE-2026-46693 | Medium | 4.1 | 0.1% | - | Fix |
Common questions
How do I fix CVE-2026-73632?
No published fix for CVE-2026-73632 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-73632 being actively exploited?
Not that we know of. CVE-2026-73632 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.26% is the estimated probability that it will be exploited in the next 30 days. That is higher than 18% of all scored CVEs.
How severe is CVE-2026-73632?
CVE-2026-73632 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-18.