CVE-2026-59558— WordPress Booking Calendar plugin <= 11.4.2 - Cross Site Scripting (XSS) vulnerability
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 Booking Calendar是WordPress基金会开源的一个预订日历插件。 WordPress Booking Calendar 11.4.2及之前版本存在跨站脚本漏洞，该漏洞源于输入中和不当，可能导致未经验证的攻击者进行跨站脚本攻击。
Possible ATT&CK Techniques 1 AI
T1059.007 · JavaScriptAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wpdevelop | Booking Calendar | n/a≤ 11.4.2 |
affected |
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I. Basic Information for CVE-2026-59558
Vulnerability Information
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Vulnerability Title
WordPress Booking Calendar plugin <= 11.4.2 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Cross Site Scripting (XSS) in Booking Calendar <= 11.4.2 versions.
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:L
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
Vulnerability Title
WordPress Booking Calendar 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Booking Calendar是WordPress基金会开源的一个预订日历插件。 WordPress Booking Calendar 11.4.2及之前版本存在跨站脚本漏洞，该漏洞源于输入中和不当，可能导致未经验证的攻击者进行跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wpdevelop | Booking Calendar | n/a ~ 11.4.2 | - |
|
II. Public POCs for CVE-2026-59558
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-59558 (1)
IV. Related Vulnerabilities
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CVE-2026-93655
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Same weakness: CWE-79
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V. Comments for CVE-2026-59558
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