SYM_SOL_0027 - SymbioticSec/Symbiotic-Vulnerability-Database GitHub Wiki

Function Call With Incorrect Variable or Reference as Argument

Property Value
Language solidity
Severity critical
CWE CWE-688: Function Call With Incorrect Variable or Reference as Argument
Confidence Level High
Impact Level High
Likelihood Level High

Description

The transferFrom() function incorrectly handles allowance checks, allowing a user to spend tokens on behalf of other accounts without proper authorization. This flaw lets attackers exploit allowance logic to misuse or drain tokens from accounts that did not intend to approve them.

Impact

If exploited, an attacker could steal tokens from users by spending their allowances without permission, potentially leading to significant financial loss. This undermines trust in the contract and could result in large-scale theft or disruption of the token ecosystem.