On September 25, 2026, Mandiant released a report regarding continued mass exploitation of CVE-2026-35273 by the ShinyHunters group. TrendAI’s Zero Day Initiative first reported this CVE to Oracle on June 10, 2026, following an investigation I conducted with Minh Giang and Lucas Miller of TrendAI Research. Although Oracle issued a patch under a single CVE, we reported three distinct vulnerabilities across multiple PeopleSoft components. We are coordinating with Oracle to assign separate CVEs for each issue. In this blog post, we will walk through each of these vulnerabilities, starting with a Server-Side Request Forgery (SSRF) vulnerability. We will also review the validateClient method that