{"id":"CVE-2026-73635","summary":"Apache Struts: Unbounded growth of localized-text caches driven by the request locale","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'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.","modified":"2026-08-20T03:30:16.732071019Z","published":"2026-08-15T10:38:08.227Z","database_specific":{"cna_assigner":"apache","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73635.json","unresolved_ranges":[{"extracted_events":[{"introduced":"2.0.0"},{"last_affected":"2.3.37"},{"introduced":"2.5.0"},{"last_affected":"2.5.33"},{"introduced":"6.0.0"},{"last_affected":"6.10.0"},{"introduced":"7.0.0"},{"last_affected":"7.2.1"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"2.0.0"},{"fixed":"2.3.37"},{"introduced":"2.5.0"},{"fixed":"2.5.33"},{"introduced":"6.0.0"},{"fixed":"6.10.0"},{"introduced":"7.0.0"},{"fixed":"7.2.1"}],"source":"DESCRIPTION"}]},"references":[{"type":"ADVISORY","url":"https://cwiki.apache.org/confluence/display/WW/S2-074"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73635.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73635"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/struts","events":[{"introduced":"2c0a197cea8fdc7d8cda5eeaa15a1c76507ac0a5"},{"last_affected":"60a1a2642ae7ddf74c0062fe37b3b57f83a0588e"},{"introduced":"0"},{"last_affected":"ca8d57c538136983a0180ac508ebcfabaf73f839"},{"introduced":"68fb49c10e083dce829476778eec726fc90c8c38"},{"fixed":"52628432a922c87dcbb87241b0f749ee5cfc489f"},{"introduced":"1d95543fbf2c873d5dab1773f951c38e3220b4e5"},{"fixed":"a88fd76364b8a88a8769455675ceeb8acd256d5b"}],"database_specific":{"extracted_events":[{"introduced":"2.0.0"},{"last_affected":"2.3.37"},{"introduced":"2.5.0"},{"last_affected":"2.5.33"},{"introduced":"6.0.0"},{"fixed":"6.11.0"},{"introduced":"7.0.0"},{"fixed":"7.3.0"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*"}}],"versions":["STRUTS_6_8_0","STRUTS_6_7_4","STRUTS_6_7_3","STRUTS_7_0_3","STRUTS_6_7_2","STRUTS_7_0_2","STRUTS_6_7_1","STRUTS_7_0_1","STRUTS_6_7_0","STRUTS_7_0_0","STRUTS_6_6_1","STRUTS_6_6_0","STRUTS_6_5_0","STRUTS_6_4_0","STRUTS_2_3_37","STRUTS_2_5_33","STRUTS_6_3_0_1","STRUTS_6_2_0","STRUTS_2_5_32","STRUTS_6_3_0","STRUTS_2_5_31","STRUTS_6_1_1","STRUTS_6_1_0","STRUTS_6_0_3","STRUTS_6_0_2","STRUTS_6_0_1","STRUTS_6_0_0","STRUTS_2_5_30","STRUTS_2_5_29","STRUTS_2_5_28_3","STRUTS_2_5_28_2","STRUTS_2_5_28_1","STRUTS_2_5_28","STRUTS_2_5_27","STRUTS_2_5_26","STRUTS_2_5_25","STRUTS_2_5_24","STRUTS_2_5_23","STRUTS_2_5_22","STRUTS_2_5_21","STRUTS_2_5_20","STRUTS_2_5_19","STRUTS_2_5_18","STRUTS_2_3_36","STRUTS_2_5_17","STRUTS_2_3_35","STRUTS_2_5_16","STRUTS_2_5_15","STRUTS_2_5_14_1","STRUTS_2_5_14","STRUTS_2_5_13","STRUTS_2_3_34","STRUTS_2_3_33","STRUTS_2_5_12","STRUTS_2_5_11","STRUTS_2_3_32","STRUTS_2_5_10","STRUTS_2_5_9","STRUTS_2_5_8","STRUTS_2_5_7","STRUTS_2_5_6","STRUTS_2_5_5","STRUTS_2_5_4","STRUTS_2_3_31","STRUTS_2_5_3","STRUTS_2_3_30","STRUTS_2_3_29","STRUTS_2_3_28","STRUTS_2_3_24_1","STRUTS_2_3_27","STRUTS_2_3_26","STRUTS_2_3_25","STRUTS_2_5_BETA2","STRUTS_2_3_24","STRUTS_2_5_BETA1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73635.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}