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.
- CVSS 3.1
- 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-26)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- lexiforest:curl_cffi
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qw2m-4pqf-rmpp | PyPI | curl-cffi | <0.15.0 | 0.15.0 |
| PYSEC-2026-2431 | PyPI | curl-cffi | <0.15.0 | 0.15.0 |