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CVE-2026-33224 affects Bisheng and is described in the provided reporting as an authenticated remote command execution vulnerability in Bisheng's MCP tool/server configuration functionality. The issue is tied to unsafe handling of Model Context Protocol (MCP) STDIO-based server configuration, where attacker-controlled command and argument values can be introduced into local process execution without adequate sanitization or restriction. In the reported exploitation pattern, a user able to access Bisheng's MCP configuration workflow can register or modify an MCP tool/server definition so that Bisheng launches an attacker-specified operating system command on the host running the application. The reporting places this issue in a broader family of MCP STDIO command-injection flaws propagated through unsafe SDK and application design. It also notes that Bisheng's open user registration lowers the barrier to obtaining the authenticated access needed for exploitation.
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No public exploit code observed for this vulnerability.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high- or critical-severity vulnerability identified by OX Security in Bisheng as part of MCP-related exploitation paths tied to unsafe MCP command execution behavior.
A vulnerability in Bisheng associated with unsafe MCP STDIO configuration that can lead to command execution; the article states it is patched.
A critical authenticated remote command execution vulnerability in Bisheng stemming from unsanitized STDIO MCP configuration passed to subprocess execution.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.