CVE-2026-33046: RCE in Indico Event Management System

The impact of CVE-2026-33046 is significant due to its potential for remote code execution. An attacker could leverage this vulnerability to gain unauthorized access to sensitive data stored on the server, including user credentials, event details, and configuration files. Furthermore, they could potentially escalate privileges to gain control of the entire system, enabling them to install malware, modify data, or disrupt services. The vulnerability stems from insufficient sanitization of LaTeX code, allowing attackers to bypass security measures and inject malicious commands. This is similar to other vulnerabilities where improper handling of user-supplied data in rendering engines can lead to code execution.

1. Reserved2026-03-17
2. Published2026-03-23
3. Modified2026-03-25
4. EPSS updated2026-03-31

The primary mitigation for CVE-2026-33046 is to upgrade Indico to version 3.3.12 or later. If upgrading immediately is not feasible, consider disabling server-side LaTeX rendering by ensuring the XELATEX_PATH variable is not set in indico.conf. This will prevent the vulnerability from being exploitable. Monitor Indico logs for any unusual LaTeX processing activity. Implement a Web Application Firewall (WAF) with rules to detect and block suspicious LaTeX code patterns. After upgrading, confirm the fix by attempting to render a known malicious LaTeX snippet and verifying that it is properly sanitized and does not execute arbitrary code.