Problem:
The ERC20 approve/transferFrom pattern is vulnerable if a user changes allowance from one non-zero value to another. An attacker can front-run and spend the old allowance before the new approval is set.

Risk:
Users may lose tokens unintentionally if an attacker exploits the race condition.

Risk

Reasoning:

• This is a well-known ERC20 pattern issue and is not specific to your contract.

• Exploitation requires an attacker to monitor for approval transactions and front-run them, which is possible but less common in practice for most tokens.

• Most wallets and dApps now warn users about this and recommend safe approval patterns.

• Depends on user behavior: If users follow best practices (set allowance to zero before increasing), the risk is minimal.

Summary:
Possible, but less likely unless users ignore best practices.

proof of Concept