CVE-2026-53591
freescout-help-desk · freescout
FreeScout help desk software is affected by an improper authentication vulnerability, allowing unauthenticated attackers to bypass security controls.
Executive summary
An improper authentication flaw in FreeScout allows unauthenticated attackers to bypass security controls and potentially access sensitive help desk data.
Vulnerability
This is an authentication bypass vulnerability (CWE-287) that allows an unauthenticated attacker to perform actions within the application without valid credentials. The vulnerability resides in the authentication logic, failing to verify the identity of the requester properly.
Business impact
This vulnerability grants unauthenticated users access to the help desk, which often contains sensitive customer communications and internal business data. With a CVSS score of 8.6, the risk of data breach and unauthorized modification of help desk records is significant.
Remediation
Immediate Action: Upgrade FreeScout to version 1.8.223 or later to correct the authentication mechanism.
Proactive Monitoring: Audit access logs for unauthorized administrative actions or unusual patterns of activity that do not correlate with known user sessions.
Compensating Controls: Utilize IP whitelisting or VPN-based access controls to restrict exposure of the help desk portal to trusted networks only.
Exploitation status
Public Exploit Available: No confirmed public exploit in the available data.
Analyst recommendation
The vulnerability poses a severe risk to data confidentiality and integrity. Administrators must apply the provided patch immediately to ensure that access controls are correctly enforced and to prevent unauthorized system access.