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CVE-2026-92807— Save as PDF Plugin by PDFCrowd <= 4.6.1 - Authenticated (Contributor+) Arbitrary Function Invocation / Code Injection via 'pdf_created_callback' Shortcode Attribute

Quick assessment

Affected
pdfcrowd Save as PDF Plugin by PDFCrowd
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.

PDFCrowd 开发的 WordPress “Save as PDF” 插件在所有版本（含 4.6.1 及更早版本）中均存在任意函数调用漏洞，攻击向量为 短代码属性。 具体而言， 函数会将除 和 之外的任意短代码属性原样复制到自定义选项数组中，且未进行任何净化、白名单强制或权限检查；随后 函数对该数组（包括攻击者提供的回调值）进行 AES 加密，并将生成的数据块嵌入渲染后的按钮 HTML 中。当该数据块通过未认证的 端点以 POST 请求发送回来时， 函数会对其进行解密，并在第 1722 行将 作为 PHP 可调

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-92807

Vulnerability Information
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Vulnerability Title
Save as PDF Plugin by PDFCrowd <= 4.6.1 - Authenticated (Contributor+) Arbitrary Function Invocation / Code Injection via 'pdf_created_callback' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Save as PDF Plugin by PDFCrowd plugin for WordPress is vulnerable to Arbitrary Function Invocation in all versions up to, and including, 4.6.1 via the `pdf_created_callback` shortcode attribute. The `eval_shortcode()` function copies any non-`button_`/non-`email_` shortcode attribute verbatim into a custom options array without sanitization, allowlist enforcement, or capability checks, and `create_button()` AES-encrypts that array — including the attacker-supplied callback value — and embeds the resulting blob in the rendered button HTML; when the blob is later POSTed to the unauthenticated `wp_ajax_nopriv_save_as_pdf_pdfcrowd` endpoint, `save_as_pdf_pdfcrowd()` decrypts it and invokes `$options['pdf_created_callback']` as a PHP callable at line 1722 with no `is_callable()` guard, no allowlist, and no capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to invoke arbitrary PHP functions or static class methods with plugin option data as the sole argument, enabling disclosure of the site's stored PDFCrowd API key and username or further server-side abuse. Note that the encryption boundary does not mitigate this vector because the server itself encrypts the attacker-chosen callback during shortcode rendering, supplying any authenticated Contributor with a cryptographically valid blob that any unauthenticated visitor can subsequently replay to trigger invocation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pdfcrowd Save as PDF Plugin by PDFCrowd 0 ~ 4.6.1 -

II. Public POCs for CVE-2026-92807

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III. Intelligence Information for CVE-2026-92807

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Other References for CVE-2026-92807 (6)

IV. Related Vulnerabilities

Same product: Save as PDF Plugin by PDFCrowd
Same vendor: pdfcrowd
Same weakness: CWE-94

V. Comments for CVE-2026-92807

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