{"cve":"CVE-2005-2089","nvd":{"published":"2005-07-05T04:00:00.000","modified":"2026-06-16T22:14:13.360","status":"Modified","description":"Microsoft IIS 5.0 and 6.0 allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a \"Transfer-Encoding: chunked\" header and a Content-Length header, which causes IIS to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka \"HTTP Request Smuggling.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-444"],"references":["http://seclists.org/lists/bugtraq/2005/Jun/0025.html","http://www.securiteam.com/securityreviews/5GP0220G0U.html","http://www.watchfire.com/resources/HTTP-Request-Smuggling.pdf","https://exchange.xforce.ibmcloud.com/vulnerabilities/42899","http://seclists.org/lists/bugtraq/2005/Jun/0025.html"],"products":["microsoft:internet_information_services"],"source":"nvd","synced_at":"2026-10-19T19:39:29.870204089+00:00"},"epss":{"cve":"CVE-2005-2089","score":0.3097,"percentile":0.9826,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}