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
lexiforest: curl cffi
References2
- github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4… ExploitVendor Advisory
- github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4… ExploitVendor Advisory
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 42 · as of 12 November 2026
- CWE
- CWE-918
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