CVE-2026-4528
trueleaf ApiFlow URL Validation http_proxy.service.ts validateUrlSecurity server-side request forgery
- State
- Published
- Severity
- 6.9 Medium
- Published
- Mar 21, 2026
- Updated
- Mar 23, 2026
- Reserved
- Mar 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulDB |
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-918 Server-Side Request Forgery
Affected Products
| Product | Versions |
|---|---|
ApiFlowtrueleaf |
|
References
- VDB-352316 | trueleaf ApiFlow URL Validation http_proxy.service.ts validateUrlSecurity server-side request forgeryvdb-entrytechnical-description
- VDB-352316 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #784197 | trueleaf apiflow ≤0.9.7 Server-Side Request Forgerythird-party-advisory
- https://www.notion.so/Server-Side-Request-Forgery-SSRF-in-ApiFlow-329ea92a3c4180489df2fa2702078fe5exploit
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