CVE-2005-2089

no score yetEPSS 31%

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."

EPSS: 31% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-444
Published: 2005-07-05
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

microsoft:internet_information_services

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

Check your stack JSON