Unverified50% confidenceEventExact time
Disclosed MCP vulnerabilities include: argocd-mcp shipped with no authentication at all, Rill's OAuth flow allowed attackers to skip the user consent step, and prompt injection existed in the tool descriptions of multiple MCP servers.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/13/2026
First Seen
Valid until: 1/11/2027
Sources
Related Entities
Related Claims
UnverifiedA single compromised MCP server can execute prompt injection, credential exfiltration, delivery of phishing toolkit fingerprints, PII leakage, token theft via OAuth, and SSRF attacks.75% similarUnverifiedWithout rigorous authentication, permission isolation, and input validation, a hijacked agent may cause damage to backend systems via an MCP server.74% similarUnverifiedThe official Learn documentation notes that autonomously running or misconfigured clients may execute destructive operations, and that flags for blocking destructive operations have not yet been standardized in the MCP protocol.72% similarUnverifiedAnnotation declarations on MCP servers have no enforcement validation mechanism at the protocol level, creating a supply-chain trust problem where an attacker can publish a malicious server claiming to be read-only while performing arbitrary write operations.71% similarUnverifiedIn adversarial tests, regardless of whether an attacker modifies log content, re-signs with an intruder's key, or deletes a step, AgentLog-MCP's cryptographic verification is able to detect the anomaly.70% similar
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