{"schemaVersion":3,"id":"CVE-2026-104711","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Improper neutralization of special elements used in an expression language statement ('Expression Language Injection') vulnerability in Apache Struts. If the application is configured to use the legacy RESTful action mapper, a crafted request can inject an OGNL expression that may lead to remote code execution. Struts 7 is affected only when the OGNL allowlist is disabled; it is enabled by default. Applications using the default action mapper, the restful2 mapper, or the Struts REST plugin 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 6.11.0, from 7.0.0 through 7.3.0.\n\nUsers are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.","dates":{"published":"2026-10-05T18:35:10.026Z","modified":"2026-10-06T14:09:06.711Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01191,"percentile":0.67516,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-06T00:00:00.000Z","score":0.00364,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00863,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00863,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01191,"percentile":0.67516}],"last30":[{"date":"2026-10-06T00:00:00.000Z","score":0.00364,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00863,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00863,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01191,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01191,"percentile":0.67516}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-917","name":"Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')","description":"The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/917.html"}],"affected":[{"vendor":"apache software foundation","product":"apache struts","name":"Apache Struts","label":"apache struts","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.0.0, ≤ 2.3.37","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.5.0, ≤ 2.5.33","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.0.0, ≤ 6.11.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 7.0.0, ≤ 7.3.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0.0, ≤ 2.3.37 | ≥ 2.5.0, ≤ 2.5.33 | ≥ 6.0.0, ≤ 6.11.0 | ≥ 7.0.0, ≤ 7.3.0","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_struts"},{"vendor":"apache","product":"struts","name":"struts","label":"struts","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.0.0, ≤ 2.3.37","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.5.0, ≤ 2.5.33","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.0.0, < 6.12.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 7.0.0, < 7.4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0.0, ≤ 2.3.37 | ≥ 2.5.0, ≤ 2.5.33 | ≥ 6.0.0, < 6.12.0 | ≥ 7.0.0, < 7.4.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"apache-struts","label":"Apache Struts","category":"framework"}},"hubHref":"/vendor/apache/struts"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://cwiki.apache.org/confluence/display/WW/S2-075","label":"cwiki.apache.org/confluence/display/WW/S2-075","hostname":"cwiki.apache.org","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/05/10","label":"www.openwall.com/lists/oss-security/2026/10/05/10","hostname":"www.openwall.com","tags":["Mailing List","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-05T18:35:10.026Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-06T14:09:06.711Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:25:41.800Z","stale":false,"partial":false}}