---
id: "CVE-2006-1547"
kind: "vulnerability"
aliases: ["CVE-2006-1547"]
title: "Apache Struts 1: Apache Struts 1 ActionForm Denial-of-Service Vulnerability"
severity: "high"
cvss: 7.8
epss: 0.54635
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Apache Struts 1", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "java", "runtime", "self-hosted", "struts"]
not_affected_if: ["no-struts-1-app", "struts-2-only"]
published_at: "2006-03-30T22:02:00+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2006-1547", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2006-1547", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2006-1547", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Apache Struts 1: Apache Struts 1 ActionForm Denial-of-Service Vulnerability

Apache Struts 1 ActionForm handling, when combined with BeanUtils 1.7, lets a remote request make the application unavailable. The CISA KEV entry says it is being exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Apache Struts 1 affected ? fixed ?

## How to check

Check the Struts 1 version in the application's WEB-INF/lib for struts.jar and the BeanUtils version for commons-beanutils.jar; unknown whether a single command is documented in the sources.

## Fix

Upgrade Apache Struts 1 to 1.2.9 or later, and use a BeanUtils version other than 1.7 per vendor instructions.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2006-1547
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2006-1547
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2006-1547

## From the sources

ActionForm in Apache Software Foundation (ASF) Struts before 1.2.9 with BeanUtils 1.7 allows remote attackers to cause a denial of service via a multipart/form-data encoded form with a parameter name that references the public getMultipartRequestHandler method, which provides further access to elements in the CommonsMultipartRequestHandler implementation and BeanUtils.

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