CVE-2020-27739: Citadel Webcit

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

A Weak Session Management vulnerability in Citadel WebCit through 926 allows unauthenticated remote attackers to hijack recently logged-in users' sessions. NOTE: this was reported to the vendor in a publicly archived "Multiple Security Vulnerabilities in WebCit 926" thread.

Affected products

• Citadel Webcit: up to and including 926

Published 2020-10-28. Last modified 2026-06-17.