CVE-2026-48558
OIDC auth bypass allows forged tokens to fully login.
Is CVE-2026-48558 being exploited?
Yes. CVE-2026-48558 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-48558?
CVE-2026-48558 is rated Critical with a CVSS score of 9.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-48558?
Yes. A fix has been recorded for CVE-2026-48558. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-48558 affect?
CVE-2026-48558 affects SimpleHelp 5.5.15 and earlier, SimpleHelp 6.0 pre-release builds. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-48558?
Upgrade to patched version when released; review OIDC configuration and token validation
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can obtain a fully authenticated technician session via forged OIDC tokens; possible MFA bypass.
Immediate action required
- affected>= 5.5.0 and < 5.5.16
- affected>= 6.0 and < 6.0 RC2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.