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A Docker lab reproducing CVE-2026-82222 in GiveWP 4.16.5.1: an unauthenticated PHP object-injection chain reaching marker command execution, with a constrained PoC; fixed in 4.16.7.2.
Why it matters: This research and reproducible lab validates a critical PHP object-injection POP chain in GiveWP, enabling security teams to test exposure, assess detections, and verify the 4.16.7.2 patch.
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