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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4pqf-rmpp	Exploit Vendor Advisory
https://github.com/lexiforest/curl_cffi/security/advisories/GHSA-qw2m-4pqf-rmpp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:lexiforest:curl_cffi::::::python::*
	cpe:2.3:a:lexiforest:curl_cffi:0.15.0:beta1::::python::*
	cpe:2.3:a:lexiforest:curl_cffi:0.15.0:beta2::::python::*
	cpe:2.3:a:lexiforest:curl_cffi:0.15.0:beta3::::python::*
	cpe:2.3:a:lexiforest:curl_cffi:0.15.0:beta4::::python::*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) curl_cffi es un binding de Python para curl. Antes de la 0.15.0, curl_cffi no restringe las solicitudes a rangos de IP internos, y sigue las redirecciones automáticamente a través de la libcurl subyacente. Debido a esto, una URL controlada por un atacante puede redirigir las solicitudes a servicios internos como los endpoints de metadatos en la nube. Además, la característica de suplantación de TLS de curl_cffi puede hacer que estas solicitudes aparezcan como tráfico legítimo del navegador, lo que puede eludir ciertos controles de red. Esta vulnerabilidad está corregida en la 0.15.0.

Information

Published : 2026-04-06 16:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33752

Mitre link : CVE-2026-33752

CVE.ORG link : CVE-2026-33752

JSON object : View

Products Affected

lexiforest

curl_cffi

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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