Server-Side Request Forgery Vulnerability in Trueleaf ApiFlow Product
CVE-2026-4528

6.9MEDIUM

Key Information:

Vendor

Trueleaf

Status
Apiflow
Vendor
CVE Published:
21 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4528?

A vulnerability has been identified in Trueleaf ApiFlow version 0.9.7 within the URL Validation Handler. The flaw resides in the validateUrlSecurity function found in the http_proxy.service.ts file, enabling malicious users to exploit this vulnerability for server-side request forgery. This could allow attackers to send unauthorized requests, potentially leading to unauthorized access to internal services and data leakage. Given that the exploit has been publicly disclosed, it raises concerns for users and administrators of the implicated version.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

ApiFlow 0.9.7

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-2026-4528 - Proof of Concept

References

https://vuldb.com/?id.352316
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352316
signaturepermissions-required
https://vuldb.com/?submit.784197
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

din4 (VulDB User)
JSON
.