The kk Star Ratings WordPress plugin before 5.4.6 does not implement atomic operations, allowing one user vote multiple times on a poll due to a Race Condition.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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https://wpscan.com/vulnerability/6f481d34-6feb-4af2-914c-1f3288f69207 | third party advisory vdb entry exploit technical description |