{"id":"CVE-2026-48558","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-48558","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,…","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.","published":"2026-06-12T18:16:35.317","modified":"2026-06-30T13:03:11.437","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.11484,"percentile":0.95619,"asOf":"2026-08-12"},"cisaKev":{"dateAdded":"2026-06-29","dueDate":"2026-07-02","knownRansomwareCampaignUse":false},"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://horizon3.ai/attack-research/disclosures/cve-2026-48558-simplehelp-authentication-bypass-iocs/"},{"type":"WEB","url":"https://simple-help.com/release-news"},{"type":"FIX","url":"https://simple-help.com/security/simplehelp-security-update-2026-05"},{"type":"ADVISORY","url":"https://blackpointcyber.com/blog/a-djinn-in-the-machine-taskweavers-node-js-intrusion-chain/"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48558"}],"provenance":{"sources":["OSV.dev","NVD","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-06-30T13:03:11.437"}}