Server-Side Request Forgery Vulnerability in Form Tools by Formtools.org
CVE-2026-103542

5.3MEDIUM

Key Information:

Vendor

Formtools.org

Status
Form Tools
Vendor
CVE Published:
1 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-103542?

A security flaw has been identified in Form Tools, specifically within the smart_fill function located in the AJAX Endpoint's actions.php file. This vulnerability allows attackers to manipulate the 'url' argument, leading to server-side request forgery (SSRF). It poses a significant risk as the attack can be initiated remotely, potentially compromising server integrity. Despite early notification of the issue through an issue report, there has been no response from the Form Tools project team.

Affected Version(s)

Form Tools 3.1.0

Form Tools 3.1.1

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-2026-103542 - Proof of Concept

References

https://vuldb.com/vuln/412352
vdb-entrytechnical-description
https://vuldb.com/vuln/412352/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-103542
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

wenyouwen (VulDB User)
VulDB CNA Team
.