---
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'
---

## Overview

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.

## Affected

- `struts >= 2.5.14, <= 2.5.33`
- `struts >= 6.0.0, < 6.12.0`
- `struts >= 7.0.0, < 7.4.0`

## Remediation

Upgrade past the affected range:

- `struts 7.4.0`

## Vendor advisories

- **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)