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.
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.
Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.
Metrics
Affected Vendors & Products
References
History
Thu, 08 Oct 2026 19:30:00 +0000
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| First Time appeared |
Apache
Apache struts |
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| CPEs | cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Apache
Apache struts |
Tue, 06 Oct 2026 14:30:00 +0000
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| Metrics |
ssvc
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Tue, 06 Oct 2026 12:15:00 +0000
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| Weaknesses | CWE-770 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Mon, 05 Oct 2026 20:30:00 +0000
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Mon, 05 Oct 2026 18:45:00 +0000
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| Description | 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. 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. Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue. | |
| Title | Apache Struts: Disproportionate response size when rendering BigDecimal request parameters | |
| Weaknesses | CWE-405 | |
| References |
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Status: PUBLISHED
Assigner: apache
Published: 2026-10-05T18:35:41.767Z
Updated: 2026-10-06T14:10:31.329Z
Reserved: 2026-10-02T10:54:11.636Z
Link: CVE-2026-104712
Updated: 2026-10-05T19:08:41.655Z
Status : Analyzed
Published: 2026-10-05T19:17:14.630
Modified: 2026-10-08T19:11:24.190
Link: CVE-2026-104712