CVE-2025-27543 (Early Advisory): High-Severity XSS in “EngagePortal” CRM — Session Hijacking & Data Theft Risk (CVSS 8.1) By CyberDudeBivash | Cybersecurity, AI & Threat Intelligence Network
Verification Status Your brief: “CVE-2025-27543: XSS in ‘EngagePortal’ CRM, CVSS 8.1 (High), could enable session hijacking / data theft.” Public records: As of publication, I did not find a public NVD/CVE.org entry specifically tying CVE-2025-27543 to EngagePortal . I’m publishing this as an early advisory so teams can implement class-based mitigations for XSS right away. For prevention best practices and secure-by-design guidance, see OWASP and CISA resources. OWASP Cheat Sheet Series +2 OWASP Cheat Sheet Series +2 Executive Snapshot What’s alleged: A cross-site scripting (XSS) flaw in EngagePortal CRM that lets an attacker inject script into pages viewed by other users— no direct server compromise required to steal sessions, tokens, or sensitive data in the browser. Why it’s serious: CRM sessions often hold customer records, notes, email threads, files, and API tokens . Successful XSS can impersonate users , exfiltrate data , and laterally abus...