Vulnerability Details CVE-2026-33752
curl_cffi is the a Python binding for curl. Prior to 0.15.0, curl_cffi does not restrict requests to internal IP ranges, and follows redirects automatically via the underlying libcurl. Because of this, an attacker-controlled URL can redirect requests to internal services such as cloud metadata endpoints. In addition, curl_cffi’s TLS impersonation feature can make these requests appear as legitimate browser traffic, which may bypass certain network controls. This vulnerability is fixed in 0.15.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.2%
CVSS Severity
CVSS v3 Score 8.6
References
Products affected by CVE-2026-33752
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cpe:2.3:a:lexiforest:curl_cffi:*
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cpe:2.3:a:lexiforest:curl_cffi:0.15.0