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CVE-2026-96039— BA Book Everything <= 1.8.27 - Unauthenticated Stored Cross-Site Scripting via first_name Parameter

Quick assessment

Affected
bookingalgorithms BA Book Everything
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 BA Book Everything 中存在存储型跨站脚本（Stored XSS）漏洞。该漏洞出现在 first_name 参数中，影响所有 1.8.27 及更早版本，原因是输入 sanitization（清理）和输出转义不足。这使得未经身份验证的攻击者能够在网页中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会执行。 未经身份验证的攻击者只需通过公开的 [babe-booking-form] 短代码进行一次宾客预订，即可获得访问 vulnerable 的 action_to

CVSS 7.2 · High EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
bookingalgorithms BA Book Everything ≤ 1.8.27 affected
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I. Basic Information for CVE-2026-96039

Vulnerability Information
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Vulnerability Title
BA Book Everything <= 1.8.27 - Unauthenticated Stored Cross-Site Scripting via first_name Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The BA Book Everything plugin for WordPress is vulnerable to Stored Cross-Site Scripting via first_name Parameter in all versions up to, and including, 1.8.27 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. An unauthenticated attacker can obtain the valid order_id, order_num, and order_hash credentials required to reach the vulnerable action_to_pay() handler simply by placing a guest booking through the public [babe-booking-form] shortcode, making the full exploit chain reachable without any account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
bookingalgorithms BA Book Everything 0 ~ 1.8.27 -

II. Public POCs for CVE-2026-96039

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III. Intelligence Information for CVE-2026-96039

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Patches & Fixes for CVE-2026-96039 (1)

Vendor Advisories for CVE-2026-96039 (1)

IV. Related Vulnerabilities

Same product: BA Book Everything
Same vendor: bookingalgorithms
Same weakness: CWE-79

V. Comments for CVE-2026-96039

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