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CVE-2026-46339 is an unauthenticated remote code execution vulnerability in decolua 9Router affecting versions 0.4.30 through 0.4.36. The flaw is caused by missing protection in the src/proxy.js middleware for the /api/cli-tools/* and /api/mcp/* routes. Because these paths were not properly gated, an unauthenticated attacker could register customPlugins through the cowork-settings API route and then reach the MCP bridge to trigger command execution. The issue is rooted in improper access control on sensitive administrative and execution-capable endpoints, resulting in exposure of functionality that should have required authentication or equivalent authorization checks.
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No public exploit code observed for this vulnerability.
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An unauthenticated command execution vulnerability in decolua 9Router caused by missing protection on /api/cli-tools/* and /api/mcp/* endpoints, enabling unauthenticated custom plugin registration and command execution via the MCP bridge.
A vulnerability identified as CVE-2026-46339, described in the content as involving unauthenticated remote code execution (RCE).
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.