🛡️ CVE-2026-48558 — simplehelp

🔴 CVSS 10.0 — Critical ✅ No Known Exploit CWE-347 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-48558 is classified as CWE-347: Improper Verification of Cryptographic Signature. A signature is not checked correctly, so forged or modified content is accepted as genuine.

Affected software

CVE-2026-48558 is recorded against 2 packages.

  • simplehelp
  • unknown

Timeline and source

Published on 12 June 2026 and last revised on 30 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

horizon3.ai
simple-help.com
simple-help.com
blackpointcyber.com
www.cisa.gov

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-347
Public Exploit ✅ No
Source NVD
Published 2026-06-12
Updated 2026-08-11
Modified 2026-06-30

Affected Packages

Software From version Fixed in
simplehelp — —
unknown — —

Similar Threats

Exploit Protection

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CVE-2026-48558 carries CVSS 10.0 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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