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CVE-2026-15402— Eventin <= 4.1.23 - Authenticated (Custom+) Stored Cross-Site Scripting via 'etn_shedule_objective' schedule_slot Parameter

Quick assessment

Affected
arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
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 插件“Eventin – Event Calendar, Event Registration, Tickets & Booking (AI 驱动版)”在所有版本（含 4.1.23 及之前版本）中存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞，原因是通过 和 参数进行输入时缺乏充分的输入净化和输出转义。这使得拥有贡献者（contributor）或更高权限的已认证攻击者能够注入任意 Web 脚本，这些脚本将在用户访问被注入页面时执行。

CVSS 6.4 · Medium

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2026-15402

Vulnerability Information
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Vulnerability Title
Eventin <= 4.1.23 - Authenticated (Custom+) Stored Cross-Site Scripting via 'etn_shedule_objective' schedule_slot Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'etn_shedule_objective' schedule_slot Parameter in all versions up to, and including, 4.1.23 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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
arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce 0 ~ 4.1.23 -

II. Public POCs for CVE-2026-15402

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III. Intelligence Information for CVE-2026-15402

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Patches & Fixes for CVE-2026-15402 (3)

Security Blog Posts for CVE-2026-15402 (1)

Vendor Pages for CVE-2026-15402 (4)

Other References for CVE-2026-15402 (3)

IV. Related Vulnerabilities

Same product: Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Same vendor: arraytics
Same weakness: CWE-79

V. Comments for CVE-2026-15402

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