CVE-2026-48558 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-48558
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
1.16 Probability of exploitation activity being observed over the next 30 days (64rd percentile)
CVSS score for CVE-2026-48558
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
10 Critical
Products affected by CVE-2026-48558
Simplehelp 5.0.18
Simplehelp 5.1.4
Simplehelp 5.1.8
Simplehelp 5.2.13
Simplehelp 5.2.14
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Critical
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CVE-2026-48558 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 389 62.54%
GB 40 6.43%
CA 36 5.79%
DE 29 4.66%
AU 17 2.73%
FR 14 2.25%
NL 12 1.93%
ZA 7 1.13%
IR 7 1.13%
AE 6 0.96%

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CVE-2026-48558 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 257 69.46%
Telecommunications 85 22.97%
Energy/Resources 7 1.89%
Education 7 1.89%
Business Services 4 1.08%
Retail 3 0.81%
Manufacturing 3 0.81%
Healthcare/Wellness 2 0.54%
Government/Politics 1 0.27%
Utilities 1 0.27%

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