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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-33752

Redirect-based SSRF leading to internal network access in curl_cffi (with TLS impersonation bypass)

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

lexiforest curl_cffi

  • < 0.15.0affected

References