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CVE-2026-18027— WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels <= 4.9.8 - Authenticated (Subscriber+) Arbitrary File Read via 'customer_note' Parameter

Quick assessment

Affected
webtoffee WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels
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 WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels 在所有 4.9.8 及以下版本中存在目录遍历漏洞，该漏洞可通过 函数触发。这使得具有订阅者级别及以上权限的攻击者能够读取服务器上任意文件的内容，其中可能包含敏感信息。这些经过 Base64 编码的文件内容会被嵌入到缓存的发票 HTML 中，并通过插件自身的“打印/下载”发票接口直接提供给攻击者，而这些接口仅需有效的非ces（

CVSS 6.5 · Medium EPSS 0.87% · P56

Affected Version Matrix 1

VendorProduct Version RangeStatus
webtoffee WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels ≤ 4.9.8 affected
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I. Basic Information for CVE-2026-18027

Vulnerability Information
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Vulnerability Title
WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels <= 4.9.8 - Authenticated (Subscriber+) Arbitrary File Read via 'customer_note' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.9.8 via the get_image_src_in_base64 function. This makes it possible for authenticated attackers, with subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The base64-encoded file contents are embedded into the cached invoice HTML and served directly to the attacker via the plugin's own Print/Download invoice endpoints, which require only a valid nonce and access key.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
webtoffee WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels 0 ~ 4.9.8 -

II. Public POCs for CVE-2026-18027

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III. Intelligence Information for CVE-2026-18027

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Vendor Advisories for CVE-2026-18027 (1)

IV. Related Vulnerabilities

Same product: WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels
Same vendor: webtoffee
Same weakness: CWE-22

V. Comments for CVE-2026-18027

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