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CVE-2026-107750— PDF Invoices & Packing Slips for WooCommerce <= 5.16.4 - Unauthenticated Stored Cross-Site Scripting via Billing First Name / Last Name / Company / Customer Note fields at guest checkout

Quick assessment

Affected
wpovernight PDF Invoices & Packing Slips for 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"PDF Invoices & Packing Slips for WooCommerce"在所有 5.16.4 及之前的版本中，由于输入清理和输出转义不足，在 以及 参数上存在存储型跨站脚本（Stored XSS）漏洞。该漏洞使得未认证的攻击者能够在页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将被执行。 此修复方案并不完整，是对 CVE-2026-92244 的补充修复：5.16.2 版本中引入的 白名单机制虽然能够正确拦截原始标签（raw-tag）载荷，但无法防御实体

CVSS 7.2 · High
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I. Basic Information for CVE-2026-107750

Vulnerability Information
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Vulnerability Title
PDF Invoices & Packing Slips for WooCommerce <= 5.16.4 - Unauthenticated Stored Cross-Site Scripting via Billing First Name / Last Name / Company / Customer Note fields at guest checkout
Source: CVE Program / CVE List V5
Vulnerability Description
The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'billing_address.first_name / last_name / company, customer_note' parameter in all versions up to, and including, 5.16.4 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. This is an incomplete fix for CVE-2026-92244: the wp_kses() allow-list introduced in 5.16.2 correctly blocks raw-tag payloads but is bypassed by entity-encoded payloads (e.g., &lt;img onerror=…&gt;) that contain no literal angle-bracket characters and are therefore passed through unmodified before the trailing decode rematerializes them.
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
wpovernight PDF Invoices & Packing Slips for WooCommerce 0 ~ 5.16.4 -

II. Public POCs for CVE-2026-107750

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III. Intelligence Information for CVE-2026-107750

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Other References for CVE-2026-107750 (7)

IV. Related Vulnerabilities

Same product: PDF Invoices & Packing Slips for WooCommerce
Same vendor: wpovernight
Same weakness: CWE-79