CVE DATABASE / CVE-2005-2089
CVE-2005-2089
CVSS 4.3 · MEDIUM
Summary
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 2.0 breakdown
| Base score | 4.3 (MEDIUM) |
| Vector | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| Attack vector | NETWORK |
| Attack complexity | MEDIUM |
| Confidentiality | NONE |
| Integrity | PARTIAL |
| Availability | NONE |
Weakness type (CWE)
Affected products
Microsoft internet information services
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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
Data: NIST NVD. NVD last modified 2026-04-16. Always verify against the vendor advisory before acting.