CVE-2026-4528 MEDIUM

CVE-2026-4528: trueleaf ApiFlow URL Validation http_proxy.service.ts validateUrlSecurity server-side request forgery

Vendor Trueleaf
Product ApiFlow
Weakness CWE-918 · SSRF
Published March 21, 2026
Last update March 23, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was determined in trueleaf ApiFlow 0.9.7. The impacted element is the function validateUrlSecurity of the file packages/server/src/service/proxy/http_proxy.service.ts of the component URL Validation Handler. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Key dates

02Disclosure timeline

March 21, 2026 CVE published
March 23, 2026 Record updated