{"id":"CVE-2023-34396","aliases":["EUVD-2023-1686","GHSA-4g42-gqrg-4633"],"status":"published","title":"Apache Struts: DoS via OOM owing to no sanity limit on normal form fields in multipart forms","description":"Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.05512,"percentile":0.92858,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2023-06-14T07:50:59Z","modified":"2026-10-28T02:31:03Z","fixes":[{"ecosystem":"Maven","package":"org.apache.struts:struts2-core","fixed_in":["2.5.31","6.1.2.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.31"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.2.1"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.struts:struts-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.3.10"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"struts:struts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.2.9"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.31"}]}],"versions":["2.0.11","2.0.11.1","2.0.11.2","2.0.12","2.0.14","2.0.5","2.0.6","2.0.8","2.0.9","2.1.2","2.1.6","2.1.8","2.1.8.1","2.2.1","2.2.1.1","2.2.3","2.2.3.1","2.3.1","2.3.1.1","2.3.1.2","2.3.12","2.3.14","2.3.14.1","2.3.14.2","2.3.14.3","2.3.15","2.3.15.1","2.3.15.2","2.3.15.3","2.3.16","2.3.16.1","2.3.16.2","2.3.16.3","2.3.20","2.3.20.1","2.3.20.3","2.3.24","2.3.24.1","2.3.24.3","2.3.28","2.3.28.1","2.3.29","2.3.3","2.3.30","2.3.31","2.3.32","2.3.33","2.3.34","2.3.35","2.3.36","2.3.37","2.3.4","2.3.4.1","2.3.7","2.3.8","2.5","2.5-BETA1","2.5-BETA2","2.5-BETA3","2.5.1","2.5.10","2.5.10.1","2.5.12","2.5.13","2.5.14","2.5.14.1","2.5.16","2.5.17","2.5.18","2.5.2","2.5.20","2.5.22","2.5.25","2.5.26","2.5.27","2.5.28","2.5.28.1","2.5.28.2","2.5.28.3","2.5.29","2.5.30","2.5.5","2.5.8"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.2.1"}]}],"versions":["6.0.0","6.0.3","6.1.1","6.1.2"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.struts:struts-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.3.10"}]}],"versions":["1.3.10","1.3.5","1.3.8","1.3.9"]},{"source":"osv","ecosystem":"Maven","package":"struts:struts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.2.9"}]}],"versions":["1.0.2","1.1","1.1-b2-20021124","1.1-b3","1.1-beta-2","1.1-rc1","1.1-rc2","1.2.2","1.2.4","1.2.7","1.2.8","1.2.9"]}],"products":[{"vendor":"apache","product":"struts"},{"vendor":"apache software foundation","product":"apache struts"}],"references":[{"url":"https://cwiki.apache.org/confluence/display/WW/S2-064","tags":["vendor-advisory","x_transferred","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2023/06/14/3","tags":["x_transferred","Mailing List","web"]},{"url":"https://security.netapp.com/advisory/ntap-20230706-0005/","tags":["x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34396","tags":["advisory"]},{"url":"https://github.com/apache/struts/commit/2d6f1bc0a6f5ac575a56784ac6461816b67c4f21","tags":["web"]},{"url":"https://github.com/apache/struts/releases/tag/STRUTS_2_5_31","tags":["web"]},{"url":"https://github.com/apache/struts/releases/tag/STRUTS_6_1_2_1","tags":["web"]},{"url":"https://security.netapp.com/advisory/ntap-20230706-0005","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4g42-gqrg-4633"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34396.json","tags":["advisory"]},{"url":"https://github.com/apache/struts","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-34396","title":"Apache Struts: DoS via OOM owing to no sanity limit on normal form fields in multipart forms","description":"Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T07:50:59.73Z","modified":"2025-02-13T16:55:30.737Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:35:35.580545Z"}],"euvd":[{"id":"EUVD-2023-1686","description":"Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T07:50:59Z","modified":"2025-02-13T16:55:30Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:03:50.021705Z"}],"ghsa":[{"id":"GHSA-4g42-gqrg-4633","title":"Apache Struts vulnerable to memory exhaustion","description":"Denial of service via out of memory (OOM) owing to no sanity limit on normal form fields in multipart forms. When a Multipart request has non-file normal form fields, Struts used to bring them into memory as Strings without checking their sizes. This could lead to an OOM if developer has set struts.multipart.maxSize to a value equal or greater than the available memory.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T09:30:42Z","modified":"2025-10-13T12:40:52Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:39:00.807341Z"}],"nvd":[{"id":"CVE-2023-34396","description":"Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T08:15:09.52Z","modified":"2026-06-17T06:03:33.02Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:08:06.335469Z"}],"osv":[{"id":"CVE-2023-34396","title":"Apache Struts: DoS via OOM owing to no sanity limit on normal form fields in multipart forms","description":"Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T07:50:59.73Z","modified":"2026-10-28T02:31:03.874475659Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"GHSA-4g42-gqrg-4633","title":"Apache Struts vulnerable to memory exhaustion","description":"Denial of service via out of memory (OOM) owing to no sanity limit on normal form fields in multipart forms. When a Multipart request has non-file normal form fields, Struts used to bring them into memory as Strings without checking their sizes. This could lead to an OOM if developer has set struts.multipart.maxSize to a value equal or greater than the available memory.\n\nUpgrade to Struts 2.5.31 or 6.1.2.1 or greater","status":"published","published":"2023-06-14T09:30:42Z","modified":"2025-10-13T13:09:04.438827Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:46:36.782754Z"}]}}