{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104712", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-10-02T10:54:11.636Z", "datePublished": "2026-10-05T18:35:41.767Z", "dateUpdated": "2026-10-05T19:08:41.655Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-05T18:35:41.767Z"}, "title": "Apache Struts: Disproportionate response size when rendering BigDecimal request parameters", "problemTypes": [{"descriptions": [{"description": "CWE-405 Asymmetric Resource Consumption (Amplification)", "lang": "en", "cweId": "CWE-405", "type": "CWE"}]}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Struts", "packageURL": "pkg:maven/org.apache.struts/struts2-core", "versions": [{"status": "affected", "version": "2.5.14", "lessThanOrEqual": "2.5.33", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThanOrEqual": "6.11.0", "versionType": "semver"}, {"status": "affected", "version": "7.0.0", "lessThanOrEqual": "7.3.0", "versionType": "semver"}], "defaultStatus": "unaffected", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.struts:struts2-core"}], "descriptions": [{"value": "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 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.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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 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.<br><br>This 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.<br><br>Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue."}]}], "references": [{"url": "https://cwiki.apache.org/confluence/display/WW/S2-076", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "0xCc.zhang", "type": "finder"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/05/11"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-05T19:08:41.655Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.struts:struts2-core", "packageURL": "pkg:maven/org.apache.struts/struts2-core", "product": "Apache Struts", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.5.33", "status": "affected", "version": "2.5.14", "versionType": "semver"}, {"lessThanOrEqual": "6.11.0", "status": "affected", "version": "6.0.0", "versionType": "semver"}, {"lessThanOrEqual": "7.3.0", "status": "affected", "version": "7.0.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 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."}], "id": "CVE-2026-104712", "lastModified": "2026-10-05T19:17:14.630", "metrics": {}, "published": "2026-10-05T19:17:14.630", "references": [{"source": "security@apache.org", "url": "https://cwiki.apache.org/confluence/display/WW/S2-076"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-405"}], "source": "security@apache.org", "type": "Primary"}]}

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{"created": "2026-10-05T19:30:21.267898+00:00", "updated": "2026-10-05T19:30:21.267904+00:00", "vendors": []}