{"id":"CVE-2023-34149","aliases":["GHSA-8f6x-v685-g2xc"],"url":"https://o3.security/vulnerability/CVE-2023-34149","summary":"Apache Struts: DoS via OOM owing to not properly checking of list bounds","details":"Denial of service via out of memory (OOM) owing to not properly checking of list bounds. 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 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.","published":"2023-06-14T07:48:54.926Z","modified":"2026-08-12T03:51:25.315330607Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.05448,"percentile":0.92336,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.struts:struts2-core","fixedVersion":"2.5.31"},{"ecosystem":"Maven","name":"org.apache.struts:struts2-core","fixedVersion":"6.1.2.1"}],"fix":{"url":"https://github.com/apache/struts/commit/2d6f1bc0a6f5ac575a56784ac6461816b67c4f21","label":"apache/struts@2d6f1bc"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2023/06/14/2"},{"type":"ADVISORY","url":"https://cwiki.apache.org/confluence/display/WW/S2-063"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34149.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34149"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230706-0005/"},{"type":"WEB","url":"https://github.com/apache/struts/commit/2d6f1bc0a6f5ac575a56784ac6461816b67c4f21"},{"type":"PACKAGE","url":"https://github.com/apache/struts"},{"type":"WEB","url":"https://github.com/apache/struts/releases/tag/STRUTS_2_5_31"},{"type":"WEB","url":"https://github.com/apache/struts/releases/tag/STRUTS_6_1_2_1"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20230706-0005"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:25.315330607Z"}}