Description
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.
Published: 2026-04-06
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: Internal Network Access via SSRF
Action: Immediate Patch
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qw2m-4pqf-rmpp curl_cffi: Redirect-based SSRF leads to internal network access in curl_cffi (with TLS impersonation bypass)
History

Thu, 09 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
CPEs 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:*:*

Tue, 07 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Lexiforest
Lexiforest curl Cffi
Vendors & Products Lexiforest
Lexiforest curl Cffi

Mon, 06 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 06 Apr 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Redirect-based SSRF leading to internal network access in curl_cffi (with TLS impersonation bypass)
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}


Subscriptions

Lexiforest Curl Cffi
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-06T15:40:54.380Z

Reserved: 2026-03-23T18:30:14.125Z

Link: CVE-2026-33752

cve-icon Vulnrichment

Updated: 2026-04-06T15:34:37.548Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-06T16:16:34.140

Modified: 2026-04-09T18:10:21.143

Link: CVE-2026-33752

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-10T09:45:15Z

Weaknesses