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GHSA-GVF6-RF7M-9H3G

Vulnerability from github – Published: 2026-08-15 12:30 – Updated: 2026-08-17 15:30

Details

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.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-73631"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-567"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T11:16:27Z",
    "severity": "MODERATE"
  },
  "details": "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.\n\nThis issue affects Apache Struts: 7.2.1.\n\nUsers are recommended to upgrade to version 7.3.0, which fixes the issue.",
  "id": "GHSA-gvf6-rf7m-9h3g",
  "modified": "2026-08-17T15:30:38Z",
  "published": "2026-08-15T12:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73631"
    },
    {
      "type": "WEB",
      "url": "https://cwiki.apache.org/confluence/display/WW/S2-070"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-73631 (GCVE-0-2026-73631)

Vulnerability from cvelistv5 – Published: 2026-08-15 10:38 – Updated: 2026-08-17 12:42

Title

Apache Struts: Shared parsing state in the JSON plugin

Summary

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 12:42 UTC

CWE

CWE-567 - Unsynchronized Access to Shared Data in a Multithreaded Context

Assigner

apache mitre root Scorecard

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Struts	Affected: 7.2.1 (semver)

Credits

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

Show details on NVD website

JSON

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  "containers": {
    "adp": [
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
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              "content": {
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                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-17T12:42:07.654513Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "packageName": "org.apache.struts:struts2-json-plugin",
          "product": "Apache Struts",
          "vendor": "Apache Software Foundation",
          "versions": [
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              "status": "affected",
              "version": "7.2.1",
              "versionType": "semver"
            }
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "g0w6y (https://github.com/g0w6y)"
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            },
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    "dateReserved": "2026-08-13T11:51:27.818Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

GHSA-GVF6-RF7M-9H3G

CVE-2026-73631 (GCVE-0-2026-73631)

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