CVE-2026-48558: What You Need to Know About the SimpleHelp OIDC Authentication Bypass
A vulnerability in SimpleHelp's OpenID Connect authentication was reported to us,patched, and assigned CVE-2026-48558. If you are running SimpleHelp 5.5.16 orSimpleHelp 6.0 RC2 or later, your server is not affected. This post covers what the vulnerability is, who is at risk, and what you should do.
June 19, 2026