CVE-2026-87870: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Saturday Drive Ninja Forms - Scheduled Exports
Description
The Ninja Forms - Scheduled Exports WordPress plugin up to version 3.0.3 contains a stored cross-site scripting (XSS) vulnerability. This flaw arises from improper input sanitization and output escaping of REST API parameters (interval, format, emailTo). Authenticated users with subscriber-level privileges or higher can exploit this to inject malicious scripts that execute when other users view the affected pages. The REST endpoint lacks proper permission checks beyond nonce validation, increasing risk.
CVSS v3.1
Score 6.4medium
Affected software
Saturday Drive
Ninja Forms - Scheduled Exports
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87870 is a stored cross-site scripting vulnerability in the Ninja Forms - Scheduled Exports plugin for WordPress, affecting all versions up to and including 3.0.3. The vulnerability is due to insufficient sanitization and escaping of REST API parameters 'interval', 'format', and 'emailTo'. The REST endpoint is registered without a permission_callback and relies solely on nonce validation without verifying user capabilities. This allows authenticated attackers with subscriber-level privileges or higher to inject arbitrary web scripts that execute when a user accesses the injected page.
Potential Impact
An attacker with subscriber-level or higher privileges can inject malicious scripts via the vulnerable REST API parameters. These scripts execute in the context of users who view the affected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not affect availability but impacts confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the REST API endpoints and limit user privileges to trusted users only. Monitor for updates from Saturday Drive regarding an official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-09-09T13:32:31.007Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa217f7acd9273b496dbaea
Added to database: 09/10/2026, 02:37:43 UTC
Last enriched: 09/18/2026, 00:40:37 UTC
Last updated: 10/11/2026, 06:48:19 UTC
Views: 51
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