{"cve_id":"CVE-2026-48558","published":"2026-06-12T18:16:35.317000+00:00","last_modified":"2026-10-07T20:17:12.940000+00:00","vuln_status":"Analyzed","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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","base_score":10.0,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"CHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-347"],"in_kev":true,"kev_date_added":"2026-06-29","kev_ransomware":false,"epss_score":0.77659,"epss_percentile":0.99564,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"PRIV","caps":["CODE_EXEC","PRIV_GAIN"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-08T03:18:57.604631+00:00","first_seen":"2026-06-12T18:16:35.317000+00:00","kev_first_seen":"2026-06-29T00:00:00+00:00","novelty_score":53.84,"novelty_reasons":["EPSS_SPIKE","HIGH_LEVERAGE_STEPPING_STONE","REACHES_TERMINAL"],"novelty_at":"2026-11-02T03:21:44.260683+00:00","vendors":["simple-help"],"products":["simplehelp"],"affected":[{"vendor":"simple-help","product":"simplehelp","ranges":["< 5.5.16","6.0"]}]}