CVE-2023-46218 (GCVE-0-2023-46218)
Vulnerability from cvelistv5
Published
2023-12-07 01:10
Modified
2025-06-30 16:20
Summary
This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.
Impacted products
Vendor Product Version
curl curl Version: 8.4.0    8.4.0
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Show details on NVD website


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