CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
Impactr finds and proves whether CWE-367 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.