9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-29689

CVE-2023-29689: PyroCMS remote code execution vulnerability

PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-29689

CVE-2023-29689:

9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
pyrocms/pyrocms	composer	<= 3.9

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from improper handling of user input in template rendering. PyroCMS uses Twig for templating, and the critical RCE occurs when unvalidated user input is passed to Twig's render() function. This allows attackers to inject Twig template syntax (e.g., {{ malicious_code }}) that executes arbitrary PHP code. While the exact controller/file isn't specified in public disclosures, the root cause lies in Twig's Environment::render method being called with attacker-controlled input, a common SSTI pattern in PHP applications. The high confidence comes from the vulnerability's classification as SSTI leading to RCE, which directly implicates template rendering functions.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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