CVE-2023-28015: Hcl Domino Appdev Pack

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

The HCL Domino AppDev Pack IAM service is susceptible to a User Account Enumeration vulnerability.   During a failed login attempt a difference in messages could allow an attacker to determine if the user is valid or not.  The attacker could use this information to focus a brute force attack on valid users.

Affected products

• Hcl Domino Appdev Pack: before 1.0.16 (fixed in 1.0.16)

Published 2023-05-23. Last modified 2026-06-17.