{"id":"CVE-2026-104712","title":"Asymmetric resource consumption (amplification) vulnerability in Apache Struts","summary":"Asymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-405","CWE-770"],"vendor":"apache","product":"struts","affected":["struts >= 2.5.14, <= 2.5.33","struts >= 6.0.0, < 6.12.0","struts >= 7.0.0, < 7.4.0"],"patched":["struts 7.4.0"],"published":"2026-10-05","updated":"2026-10-08","sourceUpdated":"2026-10-08T19:11:24.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104712","references":[{"url":"https://cwiki.apache.org/confluence/display/WW/S2-076","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/05/11","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104712.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-104712"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546055"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-104712"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104712"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00844,"epssPercentile":0.57778,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-06T14:09:49.658503Z"},"ingestedAt":"2026-10-05T19:30:59.977Z","slug":"CVE-2026-104712","body":"## Overview\n\nAsymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the framework can produce a response many orders of magnitude larger than the request, allowing an unauthenticated remote attacker to exhaust server CPU and outbound network capacity with sustained low-volume traffic. Applications that do not bind request parameters to BigDecimal properties, or never render such a property through the Struts tag library, are not affected.\n\nThis issue affects Apache Struts: from 2.5.14 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.\n\n## Affected\n\n- `struts >= 2.5.14, <= 2.5.33`\n- `struts >= 6.0.0, < 6.12.0`\n- `struts >= 7.0.0, < 7.4.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `struts 7.4.0`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Fuse 7 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Fuse 7 · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104712.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[{"seq":216213,"id":"CVE-2026-104712","ts":1791274023940,"field":"cvss","old":null,"new":"7.5"},{"seq":216212,"id":"CVE-2026-104712","ts":1791274023940,"field":"severity","old":"none","new":"high"}]}