ShinyHunters have found a way to bypass a mitigation for a zero-day they previously exploited – so now, not only are they back to abusing the same bug, they’ve even expanded their scope to target a much larger pool of organizations.
In June 2026, it was reported that ShinyHunters, the infamous data extortionists, found a Java deserialization vulnerability in Oracle’s PeopleSoft Environment Management Hub (PSEMHUB) servlet that allowed them to achieve web shell deployment or fileless command execution on vulnerable servers.
Oracle PeopleSoft is a suite of enterprise business software used mainly by large organizations, universities, governments, and corporations to manage things like human resources, finance, supply chain, and student administration.
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Source: TechRadar News
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