CVE-2026-9009

Crawlomatic Multipage Scraper Post Generator <= 2.7.2 - Authenticated (Author+) Remote Code Execution via 'callback_raw' Shortcode Attribute

2026-05-27 17:20
Nguyen Ngoc Duc (duc193)

Strategic Overview

Status
Patched in 2.7.3
Affected Version
<= 2.7.2
CVSS
8.8High
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2026-9009
View all Crawlomatic Multipage Scraper Post Generator vulnerabilities

At a glance

CVE-2026-9009 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Crawlomatic Multipage Scraper Post Generator WordPress plugin, affecting versions <= 2.7.2. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 2.7.3; sites on affected versions should update now. Disclosed May 2026, reported by Nguyen Ngoc Duc (duc193).

Vulnerability Overview

The Crawlomatic Multipage Scraper Post Generator plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.7.2 via the filter_content function. This is due to passing the attacker-supplied 'callback_raw' shortcode attribute directly into call_user_func() with no sanitization or allowlist validation, relying solely on an is_callable() check that permits dangerous PHP built-ins such as system, shell_exec, exec, passthru, and assert. This makes it possible for authenticated attackers, with author-level access and above, to execute code on the server. An identical sink exists for the 'callback' attribute, providing a second independent vector through the same shortcode.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

Crawlomatic Multipage Scraper Post Generator <= 2.7.2 carries this weakness at callback_raw, and reaching it takes an account at Author level or above. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.

If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For Crawlomatic Multipage Scraper Post Generator the fix is 2.7.3: builds <= 2.7.2 are affected, anything from 2.7.3 onward is not.

Remediation

Update to version 2.7.3, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Crawlomatic Multipage Scraper Post Generator 2.7.3 closes this, and updating the plugin is the step that ends it.

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External References

Related records

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