The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub