CVE-2026-48558
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| SimpleHelp | SimpleHelp | 5.5.0 < 5.5.16 | affected |
| SimpleHelp | SimpleHelp | 6.0 < 6.0 RC2 | affected |
Weaknesses
- CWE-347: Improper Verification of Cryptographic Signature
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: active
- Automatable: yes
- Technical Impact: total
Additional References
- https://blackpointcyber.com/blog/a-djinn-in-the-machine-taskweavers-node-js-intrusion-chain/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48558
References
- https://horizon3.ai/attack-research/disclosures/cve-2026-48558-simplehelp-authentication-bypass-iocs/
- https://simple-help.com/security/simplehelp-security-update-2026-05
- https://simple-help.com/release-news
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