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CVE-2026-87870— Ninja Forms - Scheduled Exports <= 3.0.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via REST API Parameters

Quick assessment

Affected
Saturday Drive Ninja Forms - Scheduled Exports
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.

WordPress 的 Ninja Forms - Scheduled Exports 插件在所有版本（包括 3.0.3 及之前）中，由于输入过滤不足和输出转义缺失，存在通过 REST API 参数（interval、format、emailTo）引发的存储型跨站脚本（Stored XSS）漏洞。这使得拥有订阅者级别或更高权限的认证攻击者，能够向将在用户访问时执行的页面中注入任意 Web 脚本。该 REST 端点在注册时未设置 ，并且仅校验 nonce，而未检查用户权限（capabilities）。

CVSS 6.4 · Medium
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I. Basic Information for CVE-2026-87870

Vulnerability Information
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Vulnerability Title
Ninja Forms - Scheduled Exports <= 3.0.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via REST API Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
The Ninja Forms - Scheduled Exports plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REST API Parameters (interval, format, emailTo) in all versions up to, and including, 3.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level privileges and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The REST endpoint is registered without a permission_callback and only validates a nonce without checking user capabilities.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Saturday Drive Ninja Forms - Scheduled Exports 0 ~ 3.0.3 -

II. Public POCs for CVE-2026-87870

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III. Intelligence Information for CVE-2026-87870

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Vendor Pages for CVE-2026-87870 (2)

IV. Related Vulnerabilities

Same vendor: Saturday Drive
Same weakness: CWE-79

V. Comments for CVE-2026-87870

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