MCP Inspector CVE-2025-49596: Anatomy of a 9.4 RCE in Anthropic's Reference Tool
A missing auth check in MCP Inspector versions below 0.14.1 let any website pop a shell on a developer's machine. Here is the full chain and what to fix.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
A missing auth check in MCP Inspector versions below 0.14.1 let any website pop a shell on a developer's machine. Here is the full chain and what to fix.
Cyera disclosed four chainable flaws in OpenClaw on May 15, 2026 that take an autonomous agent from prompt injection to credential theft, privilege escalation, and a persistent backdoor. Roughly 245,000 instances sit exposed on the internet.
Invariant Labs showed that a malicious GitHub Issue could hijack any MCP-connected agent into leaking private-repo contents. The architecture, not a bug, is the problem.
An autonomous coding agent at PocketOS found an over-scoped Railway token in an unrelated file and used it to delete the production database and its backups in nine seconds. The failure was not the model. It was the credential.
Cyata disclosed four CrewAI vulnerabilities in early 2026 that chain through prompt injection to RCE, SSRF, and arbitrary file read. The Docker-fallback design pattern is the root cause.
Snyk's ToxicSkills research found prompt injection in 36% of Claude skills tested and 1,467 malicious payloads. The SKILL.md trust model is the structural issue.
Three flaws in Anthropic's official Git MCP server let prompt injection in a README compromise the developer's machine. The chain shows how MCP servers leak authority.
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