VU#166125: Bisheng has authentication bypass vulnerabilities

Summary

Overview Bisheng contains three vulnerabilities: a pre-authentication account takeover mechanism via a legacy single sign-on (SSO) endpoint; an Insecure Direct Object Reference (IDOR) vulnerability that exposes cross-user workflow data; and prior to version 2.5.0, authenticated attackers could perform cross-user LLM credential abuse and data disclosure due to missing service-layer access checks. Together, these flaws could allow unauthenticated attackers to gain administrative control while enabling authenticated users access to sensitive data and hardcoded credentials. Description Bisheng is an open-source Large Language Model (LLM) application DevOps platform, developed by DataElement, designed to assist in building, managing, and scaling LLMs. CVE-2026-96679 (Legacy SSO Bypass) A vulnerability resides in the legacy SSO endpoint ( POST... Related CVEs: CVE-2026-100156, CVE-2026-96679, CVE-2026-96681.

Why it matters

CERT/CC notes often cover coordinated disclosures, multi-vendor exposure, infrastructure risk, or cases where remediation guidance is still developing.

Operator check

Review the CERT/CC Vulnerability Note and compare the affected vendor and product list against your inventory. Apply vendor fixes or compensating controls for Bisheng where available.

Sources