Fetching from the wire…
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Public story · 2026-07-01 · high
Neither bug needs a login, and nginx-ui's flawed endpoint alone reaches more than 150 million downloads.
Why now: Both CVEs surface together in Practical DevSecOps's 2026 MCP security report, which landed in the July 1 briefing.
Two MCP developer tools shipped remote-code-execution bugs scored 9.8 on CVSS, both exploitable with a single unauthenticated HTTP request, per Practical DevSecOps.
Both tools sit on the same machine as your coding agents and your credentials. One crafted request installs new code and runs it, no login required.
CVE-2026-23744 hits the MCPJam inspector, which binds 0.0.0.0 with no authentication, so a crafted HTTP request installs an MCP server and runs arbitrary code.
CVE-2026-33032 hits nginx-ui, which counts more than 150 million downloads and whose MCP message endpoint skips authentication on command-execution requests.
That pattern repeats across both bugs: wide binds, no auth, then code execution. MCP tooling keeps treating localhost as the security boundary. These CVSS-9.8 bugs keep following.
If you run either tool, or anything like them, check what your inspector binds to. Confirm it asks for credentials before you expose it beyond localhost. Do it before you wire it into an agent workflow, not after.
Each link below shares sources, entities, or timing with this story.
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