CVE-2026-104712Apache Struts: Disproportionate response size when rendering BigDecimal request parameters
Updated under an hour ago ()
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It affects Apache Software Foundation Apache Struts and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.95%, higher than 60% of scored CVEs.
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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.
- CVSS
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-405
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.95% (percentile 60)
- Assigned by
- apache
- NVD analysis
- Analyzed
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache Struts apache_software_foundation:apache_struts (from the name) | from 2.5.14 through 2.5.33; from 6.0.0 through 6.11.0; from 7.0.0 through 7.3.0 | CNA record |
apache struts apache:struts | from 2.5.14 through 2.5.33; from 6.0.0 before 6.12.0; from 7.0.0 before 7.4.0 | NVD |
References
- https://cwiki.apache.org/confluence/display/WW/S2-076vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/10/05/11mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.