formtools.org Form Tools Client Settings Clients.class.php updateClientSettingsTab special elements in template engine
Summary
| CVE | CVE-2026-103540 |
|---|---|
| State | PUBLISHED |
| Assigner | VulDB |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-01 06:17:04 UTC |
| Updated | 2026-10-01 20:17:23 UTC |
| Description | A security vulnerability has been detected in formtools.org Form Tools up to 3.1.1. This vulnerability affects the function Clients::updateClientSettingsTab of the file global/code/Clients.class.php of the component Client Settings. The manipulation of the argument page_titles leads to improper neutralization of special elements used in a template engine. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet. |
Risk And Classification
Primary CVSS: v4.0 2.1 LOW from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002370000 probability, percentile 0.133430000 (date 2026-10-04)
Problem Types: CWE-791 | CWE-1336 | CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine | CWE-791 Incomplete Filtering of Special Elements
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 2.1 | LOW | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C... |
| 4.0 | CNA | DECLARED | 5.3 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P |
| 3.1 | [email protected] | Secondary | 6.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| 3.1 | CNA | DECLARED | 6.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C |
| 3.0 | CNA | DECLARED | 6.3 | MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C |
| 2.0 | [email protected] | Secondary | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P | |
| 2.0 | CNA | DECLARED | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v3.0 Breakdown
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Formtools.org | Form Tools | affected 3.1.0 | Not specified |
| CNA | Formtools.org | Form Tools | affected 3.1.1 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| vuldb.com/cve/CVE-2026-103540 | [email protected] | vuldb.com | |
| github.com/wawyw/cve_report/blob/main/formtools_1.md | [email protected] | github.com | |
| vuldb.com/submit/957845 | [email protected] | vuldb.com | |
| vuldb.com/vuln/412350/cti | [email protected] | vuldb.com | |
| vuldb.com/vuln/412350 | [email protected] | vuldb.com | |
| github.com/formtools/core/issues/956 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: wenyouwen (VulDB User) (en)
CNA: VulDB CNA Team (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-30T00:00:00.000Z | Advisory disclosed |
| CNA | 2026-09-30T02:00:00.000Z | VulDB entry created |
| CNA | 2026-09-30T21:12:39.000Z | VulDB entry last update |