Information Disclosure in curl_cffi Python Binding from Lexiforest
CVE-2026-33752

8.6HIGH

Key Information:

Vendor

Lexiforest

Status
Curl Cffi
Vendor
CVE Published:
6 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-33752?

The curl_cffi library, a Python binding for the curl command line tool, has a security oversight in versions prior to 0.15.0 that allows unrestricted requests to internal IP addresses and services. This flaw can lead to attackers exploiting the redirection feature, enabling them to potentially access sensitive cloud metadata endpoints. Additionally, the TLS impersonation capability of curl_cffi can make malicious requests blend in with authentic browser traffic, posing a significant risk to network security by circumventing established control measures.

Affected Version(s)

curl_cffi < 0.15.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-33752
Created by redyank

References

https://github.com/lexiforest/curl_cffi/security/advisori...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

.