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CVE-2026-103541— formtools.org Form Tools Ajax actions.php uploadFile unrestricted upload

Quick assessment

Affected

formtools.org Form Tools

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 formtools.org 的 Form Tools（版本 ≤ 3.1.1）中检测到一个漏洞。该问题影响 Ajax Handler 组件中文件里的函数。攻击者可通过操纵该函数实现不受限制的文件上传，并支持远程发起攻击。目前该漏洞的利用方法已公开，可能被恶意使用。项目方此前已通过问题报告获知此问题，但至今未作出回应。

CVSS 6.3 · Medium Updated Oct 01, 2026

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

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Vulnerability Information

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Vulnerability Title

formtools.org Form Tools Ajax actions.php uploadFile unrestricted upload

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was detected in formtools.org Form Tools up to 3.1.1. This issue affects the function Files::uploadFile of the file global/code/actions.php of the component Ajax Handler. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

危险类型文件的不加限制上传

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
formtools.org	Form Tools	3.1.0	`cpe:2.3:a:form_tools:form_tools::::::::`

II. Public POCs for CVE-2026-103541

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-103541

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Proof of Concept for CVE-2026-103541 (1)

🔗 FormTools 3.1.1 smart_fill upload endpoint allows authenticated arbitrary .php upload leading to remote code execution (any logged-in user, including low-privileged clients) · Issue #957 · formtools/core Read full article issue-tracking

Other References for CVE-2026-103541 (1)

🔗 cve_report/formtools_2.md at main · wawyw/cve_report · GitHub Read full article exploit

https://www.cve.org/CVERecord?id=CVE-2026-103541

Same Patch Batch · formtools.org · 2026-10-01 · 3 CVEs total

CVE-2026-103540	6.3 MEDIUM	formtools.org Form Tools Client Settings Clients.class.php updateClientSettingsTab special
CVE-2026-103542	4.3 MEDIUM	formtools.org Form Tools AJAX Endpoint actions.php smart_fill server-side request forgery

IV. Related Vulnerabilities

Same product: Form Tools

Same vendor: formtools.org

Same weakness: CWE-434

V. Comments for CVE-2026-103541

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-103541— formtools.org Form Tools Ajax actions.php uploadFile unrestricted upload

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2026-103541

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-103541

III. Intelligence Information for CVE-2026-103541

Proof of Concept for CVE-2026-103541 (1)

Other References for CVE-2026-103541 (1)

Same Patch Batch · formtools.org · 2026-10-01 · 3 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-103541

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