{"id":"CVE-2026-73635","state":"PUBLISHED","title":"Apache Struts: Unbounded growth of localized-text caches driven by the request locale","description":"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.\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.","publishedAt":"2026-08-15T10:38:08.227Z","updatedAt":"2026-08-17T12:43:26.618Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Struts"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Struts","packageName":"org.apache.struts:struts2-core","defaultStatus":"unaffected","versions":[{"version":"2.0.0","status":"affected","lessThanOrEqual":"2.3.37","versionType":"semver"},{"version":"2.5.0","status":"affected","lessThanOrEqual":"2.5.33","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThanOrEqual":"6.10.0","versionType":"semver"},{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.2.1","versionType":"semver"}]}],"references":["https://cwiki.apache.org/confluence/display/WW/S2-074"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73635.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73635","state":"PUBLISHED","datePublished":"2026-08-15T10:38:08.227Z","dateUpdated":"2026-08-17T12:43:26.618Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-08-13T11:52:36.541Z"},"containers":{"cna":{"title":"Apache Struts: Unbounded growth of localized-text caches driven by the request locale","descriptions":[{"lang":"en","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'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.\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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Struts","packageName":"org.apache.struts:struts2-core","defaultStatus":"unaffected","versions":[{"version":"2.0.0","status":"affected","lessThanOrEqual":"2.3.37","versionType":"semver"},{"version":"2.5.0","status":"affected","lessThanOrEqual":"2.5.33","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThanOrEqual":"6.10.0","versionType":"semver"},{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.2.1","versionType":"semver"}]}],"references":[{"url":"https://cwiki.apache.org/confluence/display/WW/S2-074","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-08-15T10:38:08.227Z"},"credits":[{"lang":"en","type":"finder","value":"Kuniyoshi Noguchi (野口 晋義), (@KuniNogu)"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T12:43:09.201224Z","id":"CVE-2026-73635","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-17T12:43:26.618Z"}}]}}}