CVE-2026-92561— Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
Quick assessment
Affected
wpdevelop Booking Calendar
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 Booking Calendar 插件在所有 11.8.2 及更早版本中，由于输入清理不足且输出未转义，存在通过 'options' 参数触发的反射型跨站脚本（Reflected Cross-Site Scripting）漏洞。这使得未经身份验证的攻击者可以注入任意 Web 脚本，只要他们能够诱骗用户执行某些操作（例如点击链接），这些脚本便会在相应页面中执行。此外，由于 'booking_is_nonce_at_front_end' 选项默认处于禁用状态，nonce 检查机制默认被绕过，允许
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wpdevelop | Booking Calendar | ≤ 11.8.2 |
affected |
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I. Basic Information for CVE-2026-92561
Vulnerability Information
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Vulnerability Title
Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'options' parameter in all versions up to, and including, 11.8.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The nonce check is bypassed by default because the 'booking_is_nonce_at_front_end' option ships disabled, allowing unauthenticated requests to reach the vulnerable sink without any verification.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 |
|---|---|---|---|---|
| wpdevelop | Booking Calendar | 0 ~ 11.8.2 | - |
|
II. Public POCs for CVE-2026-92561
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-92561 (3)
IV. Related Vulnerabilities
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Same weakness: CWE-79
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V. Comments for CVE-2026-92561
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