---
sourceDocument: Brazil Platform security
sourceDocumentLink: https://www.servicenow.com/docs/r/platform-security

 Release :

    - brazil

ft:locale :

    - en-US

ft:publication_title :

    - Brazil Platform security

ft:clusterId :

    - psec

bundleId :

    - psec

workflow :

    - Platform


---

# Disable AJAXEvaluate

# Disable AJAXEvaluate {#ariaid-title1}

Release version: Brazil  
Updated September 10, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
Use the glide.script.allow.ajaxevaluate to protect the system API
from vulnerabilities of Client script execution through AJAX calls.
The AjaxEvaluator processor executes these scripts in sandbox however there are several additional properties which can allow the scope of activities in the sandbox to expand or be turned off entirely. In a worst case scenario a
user can easily execute scripts as an admin privilege.

Ensure that the glide.script.allow.ajaxevaluate system property is set to false.

Elevation to the security_admin role is required to edit the property.  
Warning:  
This is a safe harbor property, meaning the value can't be altered once it's changed. It is non-revertible.

## More information {#sc-disable-ajaxevaluate__section_wc1_cqn_phc}

{#sc-disable-ajaxevaluate__table_ajc_b43_3kb__entry__2}

| Attribute | Description |
|-|-|
| Configuration name | glide.script.allow.ajaxevaluate |
| Configuration type | System Properties (/sys_properties_list.do) |
| Data type | Boolean |
| Recommended value | false |
| Default value | false |
| Fallback value | false |
| Category | [Validation, sanitization, and encoding](https://www.servicenow.com/docs/Y54hkYpvZcFtgJ5PMM2JEw "Validation, sanitization, and encoding addresses input validation to prevent against vulnerabilities like Cross-Site Scripting (XSS), SQL injection and other attacks.") |
| Security risk | * Severity score: 7.3 * CVSS rating: High * Security risk details: If this property is not set to false, then the system API can be vulnerable to client script execution through AJAX calls. {#sc-disable-ajaxevaluate__ul_g1g_3sf_xwb} |
| Functional impact | None |
| Dependencies and prerequisites | None |
[ ]

{#sc-disable-ajaxevaluate__table_ajc_b43_3kb}