{"id":"CVE-2006-1547","kind":"vulnerability","aliases":["CVE-2006-1547"],"related":[],"title":"Apache Struts 1: Apache Struts 1 ActionForm Denial-of-Service Vulnerability","description":"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.","summary":"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.","severity":"high","cvss":7.8,"epss":0.54635,"exploited":true,"exploited_at":"2022-01-21T00:00:00+00:00","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"],"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.","status":"open","published_at":"2006-03-30T22:02:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:29:02+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T21:29:02Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade Apache Struts 1 to 1.2.9 or later, and use a BeanUtils version other than 1.7 per vendor instructions.","reach":"internet","impact":"low","summary":"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.","category":"runtime","who_cares":["struts","java","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker can crash or stall the web application via denial of service.","analyst_note":"Confirm the exact affected BeanUtils and Struts version ranges and the attack request shape at the NVD entry for CVE-2006-1547 and the CISA KEV page.","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.","needs_analyst":true,"not_affected_if":["struts-2-only","no-struts-1-app"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000498,"input_tokens":2842,"output_tokens":428,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-1547':15A,18A '-2006':14A,17A '1':3A,6A,21A,31B '1.2.9':67C '1.7':38B,70C 'access':98C 'actionform':7A,32B,59C 'allow':71C 'apach':1A,4A,29B,61C 'apache':19A 'applic':45B 'asf':64C 'attack':73C 'beanutil':37B,69C,106C 'caus':75C 'cisa':48B 'combin':35B 'commonsmultipartrequesthandl':103C 'cve':13A,16A 'denial':9A,77C 'denial-of-servic':8A 'element':100C 'encod':83C 'entri':50B 'exploit':22B,55B 'form':84C 'foundat':63C 'getmultipartrequesthandl':93C 'handl':33B 'host':27B 'implement':104C 'java':23B 'kev':49B 'let':39B 'make':43B 'method':94C 'multipart/form-data':82C 'name':88C 'paramet':87C 'provid':96C 'public':92C 'refer':90C 'remot':41B,72C 'request':42B 'runtim':24B 'say':51B 'self':26B 'self-host':25B 'servic':11A,79C 'softwar':62C 'strut':2A,5A,28B,30B,65C 'struts':20A 'unavail':46B 'via':80C 'vulner':12A 'wild':58B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2006-03-30T22:02:00+00:00","kev":{"dateAdded":"2022-01-21","dueDate":"2022-07-21","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2006-1547","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2006-1547","severity":null,"published_at":"2022-01-21T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T10:39:07+00:00","note":null},{"source":"epss","external_id":"CVE-2006-1547","url":"https://api.first.org/data/v1/epss?cve=CVE-2006-1547","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2006-1547","url":"https://nvd.nist.gov/vuln/detail/CVE-2006-1547","severity":null,"published_at":"2006-03-30T22:02:00+00:00","modified_at":"2026-06-16T22:23:10+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}