CVE-2025-53833: LaRecipe SSTI Leading to RCE Vulnerability

CVE-2025-53833 Overview

LaRecipe is an application that allows users to create documentation with Markdown inside a Laravel app. Versions prior to 2.8.1 are vulnerable to Server-Side Template Injection (SSTI), which could potentially lead to Remote Code Execution (RCE) in vulnerable configurations. Attackers could execute arbitrary commands on the server, access sensitive environment variables, and/or escalate access depending on server configuration. Users are strongly advised to upgrade to version v2.8.1 or later to receive a patch.

Critical Impact
Vulnerability allows RCE, potentially exposing sensitive data and enabling privilege escalation.

Affected Products

LaRecipe versions prior to 2.8.1
Not Available
Not Available

Discovery Timeline

Not Available - Vulnerability discovered by Not Available
Not Available - Responsible disclosure to Not Available
Not Available - CVE CVE-2025-53833 assigned
Not Available - Not Available releases security patch
2025-07-14T23:15:24.710 - CVE CVE-2025-53833 published to NVD
2025-07-15T13:14:24.053 - Last updated in NVD database

Technical Details for CVE-2025-53833

Vulnerability Analysis

The vulnerable versions of LaRecipe allow attackers to inject malicious input into templates. Due to improper input validation, these inputs can be executed on the server, allowing command execution and access to environment variables.

Root Cause

The root cause of this vulnerability is the improper sanitization of inputs in server-side templates, leading to template injection and potential execution of arbitrary code.

Attack Vector

This vulnerability can be exploited remotely over a network. Attackers craft malicious payloads that are processed by the vulnerable application, leading to execution.

php

// Example exploitation code (sanitized)
$params = "{{ system('id') }}";
echo $twig->render('index.twig', ['user_input' => $params]);

Detection Methods for CVE-2025-53833

Indicators of Compromise

Unusual outbound network traffic
Unexpected changes to configuration files
Anomalous process creations or terminations

Detection Strategies

Implement web application firewalls (WAFs) to detect and block malicious template expressions. Monitor server logs for unusual command executions or anomalous payloads in web requests.

Monitoring Recommendations

Regularly review access logs for irregularities. Monitor for high-frequency requests that might indicate attempted exploitation.

How to Mitigate CVE-2025-53833

Immediate Actions Required

Upgrade to LaRecipe version 2.8.1 or later
Implement strict input validation on server-side templates
Isolate sensitive environment variables from attack surface

Patch Information

Users should apply the patch provided in LaRecipe version 2.8.1 available on the official repository.

Workarounds

If immediate patching is not possible, disable template rendering of user-supplied content and use a front-end to pre-validate user inputs.

bash

# Configuration example
php artisan vendor:publish --tag=larecipe-config
vim config/larecipe.php
# Disable user-generated content processing
'documents' => false