CVE-2026-33752Public exploitNetwork attack vector

Internal service access via unvalidated redirects

Published Apr 6, 2026 · Updated Apr 6, 2026

SSRF in Lexiforest curl_cffi before 0.15.0 allows remote attackers to access internal services through attacker-controlled URLs. The request layer passes user-supplied URLs directly to libcurl without checking resolved addresses, enables automatic redirect following, and performs no Python-layer validation of redirect destinations. Exposure requires a consuming application to fetch attacker-controlled URLs; a redirect can reach loopback or link-local metadata services, and TLS impersonation can evade fingerprint-based egress controls.

CVSS severity8.6
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Lexiforest curl_cffi before 0.15.0 allows remote attackers to access internal services through attacker-controlled URLs. The request layer passes user-supplied URLs directly to libcurl without checking resolved addresses, enables automatic redirect following, and performs no Python-layer validation of redirect destinations. Exposure requires a consuming application to fetch attacker-controlled URLs; a redirect can reach loopback or link-local metadata services, and TLS impersonation can evade fingerprint-based egress controls.

The record

CVE
CVE-2026-33752
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Lexiforest
Product
curl_cffi
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.15.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lexiforest · curl_cffiversion=< 0.15.0

Published CVSS scores

8.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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