Critical · published January 29, 2026
🚨 A crafty LaTeX payload is all it takes to execute arbitrary shell commands on your server! This vulnerability in Tea LaTex 1.0 is absolutely devastating. 🔥 Imagine a restaurant where the chef blindly follows any order without checking the recipe. If a customer sneaks in a dish request that includes harmful ingredients, the chef will unwittingly serve it up! That’s what happens here: the /api.php endpoint blindly runs commands it receives, with no questions asked. An attacker could leverage this vulnerability to execute any command they want on your server - gain access to sensitive data, modify files, or even take complete control of the system. It's a nightmare scenario, where unauthorized individuals can wreak havoc without any authentication required.
Imagine a restaurant where the chef blindly follows any order without checking the recipe. If a customer sneaks in a dish request that includes harmful ingredients, the chef will unwittingly serve it up! That’s what happens here: the /api.php endpoint blindly runs commands it receives, with no questions asked. This remote code execution vulnerability allows unauthenticated attackers to send specially crafted LaTeX payloads to the /api.php endpoint, which gets processed by the tex2png API action, leading to arbitrary command execution.
An attacker could leverage this vulnerability to execute any command they want on your server - gain access to sensitive data, modify files, or even take complete control of the system. It's a nightmare scenario, where unauthorized individuals can wreak havoc without any authentication required. To protect your application, immediately patch Tea LaTex to version 1.0.1 or later. Ensure that proper input validation and authentication mechanisms are implemented for endpoint access. Additionally, consider restricting API access based on your application's needs. You've got this! By following these steps, you'll lock down your application and keep those pesky attackers at bay. 🛡️