CVE-2026-48558

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. Source description excerpt; complete tracked detail loads below.

NVD published: Jun 12, 2026 · Source record updated: Aug 8, 2026 · Tracker snapshot: Aug 8, 2026

SimpleHelp — SimpleHelp. Product-level identification only; no affected-version conclusion is available from this field.

NVD published: Jun 12, 2026 · Source record updated: Aug 8, 2026 · Tracker snapshot: Aug 8, 2026

Act · 468.1

Tracker decision tier from the evidence detailed below · Source record updated: Aug 8, 2026 · Tracker snapshot: Aug 8, 2026

kev-listed · CISA KEV · VulnCheck KEV · ENISA exploited-vulnerability catalog

Active since: Jun 29, 2026 · CISA KEV added: Jun 29, 2026 · VulnCheck KEV added: Jun 29, 2026 · ENISA added: Jun 29, 2026 · Source record updated: Aug 8, 2026 · Tracker snapshot: Aug 8, 2026

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Tracked source remediation field · Source record updated: Aug 8, 2026 · Tracker snapshot: Aug 8, 2026