application-security
Race Condition
Race Condition
Definition
A race condition vulnerability occurs when the security of an operation depends on the timing or ordering of events that are not properly synchronized. In security contexts, race conditions can be exploited to bypass authentication checks, corrupt shared state, or gain unauthorized access by winning a timing window between a check and use.
The TOCTOU (Time-of-Check Time-of-Use) pattern is the most common security-relevant race condition.
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