SSRF in Lexiforest Curl Cffi
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.004 · change: -0.000
Affected products
- Lexiforest Curl Cffi — versions 0.15.0, < 0.15.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4pqf-rmpp (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33752?
- CVE-2026-33752 is a high-severity vulnerability in Lexiforest Curl Cffi, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-04-06.
- How severe is CVE-2026-33752?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2026-33752 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.