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.
- Score
- CVSS 3.1 8.6 High
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-04-06
- Last modified
- 2026-10-26
- Weaknesses
- CWE-918
Affected products
References
- https://github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4pqf-rmpp
