CVE-2026-48558

SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain 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. No user interaction is required.

CVSS v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://horizon3.ai/attack-research/disclosures/cve-2026-48558-simplehelp-authentication-bypass-iocs/	Third Party Advisory
https://simple-help.com/release-news	Release Notes
https://simple-help.com/security/simplehelp-security-update-2026-05	Patch Vendor Advisory
https://blackpointcyber.com/blog/a-djinn-in-the-machine-taskweavers-node-js-intrusion-chain/	Technical Description Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48558	US Government Resource

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:simple-help:simplehelp::::::::
	cpe:2.3:a:simple-help:simplehelp:6.0:pre-release::::::

History

No history.

Information

Published : 2026-06-12 18:16

Updated : 2026-06-30 13:03

NVD link : CVE-2026-48558

Mitre link : CVE-2026-48558

CVE.ORG link : CVE-2026-48558

JSON object : View

Products Affected

simple-help

simplehelp

CWE

CWE-347

Improper Verification of Cryptographic Signature

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