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

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MEDIUM

trueleaf ApiFlow URL Validation http_proxy.service.ts validateUrlSecurity server-side request forgery

Published Mar 21, 2026

6.9

MEDIUM

CVSS 4.0

EPSS 0.47%

Description

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.

Affected products

Vendor Trueleaf Product ApiFlow Default
n/a
- Version
  0.9.7
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Trueleaf

ApiFlow

n/a

Version	Status	Constraints
0.9.7	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-918

SSRF

References (5)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-14258
Advisory
https://vuldb.com/?ctiid.352316
signaturepermissions-required
https://vuldb.com/?id.352316
vdb-entrytechnical-description
https://vuldb.com/?submit.784197
third-party-advisory
https://www.notion.so/Server-Side-Request-Forgery-SSRF-in-ApiFlow-329ea92a3c4180489df2fa2702078fe5
exploit

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-14258		Advisory
https://vuldb.com/?ctiid.352316		signaturepermissions-required
https://vuldb.com/?id.352316		vdb-entrytechnical-description
https://vuldb.com/?submit.784197		third-party-advisory
https://www.notion.so/Server-Side-Request-Forgery-SSRF-in-ApiFlow-329ea92a3c4180489df2fa2702078fe5		exploit