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GHSA-PRRH-5R25-CH75

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

Details

This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.

Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-73635"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T11:16:27Z",
    "severity": null
  },
  "details": "Allocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the framework\u0027s internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale are not affected.\n\nThis issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.\n\nUsers are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.",
  "id": "GHSA-prrh-5r25-ch75",
  "modified": "2026-08-15T12:30:20Z",
  "published": "2026-08-15T12:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73635"
    },
    {
      "type": "WEB",
      "url": "https://cwiki.apache.org/confluence/display/WW/S2-074"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-73635 (GCVE-0-2026-73635)

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

Title

Apache Struts: Unbounded growth of localized-text caches driven by the request locale

Summary

Allocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the framework's internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale are not affected. This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.

Severity

No CVSS data available.

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

apache

References

1 reference

URL	Tags
https://cwiki.apache.org/confluence/display/WW/S2-074	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Struts	Affected: 2.0.0 , ≤ 2.3.37 (semver) Affected: 2.5.0 , ≤ 2.5.33 (semver) Affected: 6.0.0 , ≤ 6.10.0 (semver) Affected: 7.0.0 , ≤ 7.2.1 (semver)

Credits

Kuniyoshi Noguchi (野口晋義), (@KuniNogu)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "org.apache.struts:struts2-core",
          "product": "Apache Struts",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "2.3.37",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "2.5.33",
              "status": "affected",
              "version": "2.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.0",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.1",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Kuniyoshi Noguchi (\u91ce\u53e3 \u664b\u7fa9), (@KuniNogu)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Allocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the framework\u0027s internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale are not affected.\u003cbr\u003e\u003cbr\u003eThis issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue."
            }
          ],
          "value": "Allocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the framework\u0027s internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale are not affected.\n\nThis issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.\n\nUsers are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "moderate"
            },
            "type": "Textual description of severity"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T10:38:08.227Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://cwiki.apache.org/confluence/display/WW/S2-074"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Apache Struts: Unbounded growth of localized-text caches driven by the request locale",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-73635",
    "datePublished": "2026-08-15T10:38:08.227Z",
    "dateReserved": "2026-08-13T11:52:36.541Z",
    "dateUpdated": "2026-08-15T10:38:08.227Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-PRRH-5R25-CH75

CVE-2026-73635 (GCVE-0-2026-73635)

Tags

Sightings

Nomenclature