CVE-2026-73631

Apache Struts: Shared parsing state in the JSON plugin

At a glance

Severity: MEDIUM 4.3
EPSS: EPSS 0.38 % · percentile 31 (2026-10-27)
State: PUBLISHED
Published: 2026-08-15
Updated: 2026-08-17
Assigner: apache
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	CISA-ADP
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-567

European references

ENISA EUVD · EUVD-2026-59605
GCVE · GCVE-0-2026-73631

Affected configurations (NVD CPE)

cpe:2.3:a:apache:struts:7.2.1:*:*:*:*:*:*:*

Affected products

Product	Versions
Apache Software Foundation · Apache Struts	affected 7.2.1

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD