Critical · published November 5, 2025
🔥 A sneaky flaw in the expr-eval library allows for arbitrary code execution just by crafting a context object! This means an attacker can potentially turn your secure mathematical evaluations into a playground of chaos! ⚠️ Think of it like a math tutor who trusts every input without checking—the moment a kid hands in a paper with anything but numbers, chaos ensues! Instead of solving for x, they might end up with a recipe for trouble. If exploited, this vulnerability could allow an attacker to execute any command on your server, leading to data breaches, unauthorized access, or even complete takeover. It's absolutely devastating to think that a harmless math evaluation could become a vector for disaster!
Think of it like a math tutor who trusts every input without checking—the moment a kid hands in a paper with anything but numbers, chaos ensues! Instead of solving for x, they might end up with a recipe for trouble. Due to insufficient input validation in the expr-eval library, an attacker can pass malicious context objects into the evaluate() function, triggering arbitrary code execution.
If exploited, this vulnerability could allow an attacker to execute any command on your server, leading to data breaches, unauthorized access, or even complete takeover. It's absolutely devastating to think that a harmless math evaluation could become a vector for disaster! Patch your expr-eval library to the latest version immediately to mitigate this risk. Review your existing input validation practices to ensure they can't be bypassed by crafted inputs. Consider implementing stricter usage policies on user-defined variables. You can tackle this! Follow these steps to secure your application and keep those pesky attackers at bay! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| jorenbroekema/javascript_expression_evaluator | all versions | — |
| silentmatt/javascript_expression_evaluator | ≤ 2.0.2 | — |