CVE-2026-48558
SimpleHelp Authentication Bypass Vulnerability
Summary
SimpleHelp contains an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacker can submit a forged token containing arbitrary identity claims to obtain a fully authenticated technician session. In some configurations, this may also allow bypass of multi-factor authentication.
Affected software
Vendor: SimpleHelp · Product: SimpleHelp
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in SimpleHelp
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2024-57727 | SimpleHelp Path Traversal Vulnerability | 95.2% | Yes |
| CVE-2024-57726 | SimpleHelp Missing Authorization Vulnerability | 8.6% | Yes |
| CVE-2024-57728 | SimpleHelp Path Traversal Vulnerability | 7.0% | Yes |
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