The Hyland Onbase Application Server releases prior to 20.3.58.1000 and OnBase releases 21.1.1.1000 through 21.1.15.1000 are vulnerable to a username enumeration vulnerability. An attacker can obtain valid users based on the response returned for invalid and valid users by sending a POST login request to the /mobilebroker/ServiceToBroker.svc/Json/Connect endpoint. This can lead to user enumeration against the underlying Active Directory integrated systems.
Conclusion & alert: CVE-2022-23342 is rated Exploit Available (58.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.20%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-18 | 1.05% | 1.20% | +0.15% |
| 2 | 2026-06-15 | 0.54% | 1.05% | +0.51% |
| 3 | 2025-06-30 | — | 0.54% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| URL | Tags |
|---|---|
| https://community.hyland.com/login?returnUrl=/connect/hyland-research-and-development/security-advisories/username-enumeration-in-onbase | Permissions Required Vendor Advisory |
| https://github.com/InitRoot/CVE-2022-23342 | Exploit Third Party Advisory |