First reported · updated · 4 reports nhimg.org
Lead dispatch
First reported · updated · 3 reports embracethered.com
AWS Kiro: Arbitrary Code Execution via Indirect Prompt Injection
Researchers found a vulnerability (CVE-2026-10591) in AWS Kiro, an agentic IDE, where hidden instructions planted in a web page or source file that Kiro processes can trigger indirect prompt injection to rewrite Kiro's own MCP server configuration (~/.kiro/settings/mcp.json) or allowlist arbitrary Bash commands in .vscode/settings.json, achieving arbitrary code execution on the developer's machine with no approval prompt. The human-in-the-loop approval boundary is bypassed because Kiro can write to these config files without user consent, and AWS has issued a fix and CVE.indirect-prompt-injection · prompt-injection · remote-code-execution · tool-abuse · config-poisoning
ai-agents · mcp · llm · agentic-ide
Severity
0.85
The wire · latest
First reported openagent.in
MCP support: OpenAgent as an MCP client
OpenAgent, a commercial AI support platform, describes its MCP client implementation and the security controls it wraps around the raw Model Context Protocol: per-tool admin approval, 'rug-pull' defense that re-flags tools when a server silently changes tool descriptions or input schemas, AES-256-GCM encrypted credentials, a PII-redacted audit log, and an untrusted-output marker that prefixes tool results with a warning to the LLM not to follow embedded instructions. Details →First reported owasp.org
MCP Security - OWASP Cheat Sheet Series
The OWASP MCP Security Cheat Sheet catalogs the attack surface introduced by Anthropic's Model Context Protocol, which lets LLM agents dynamically invoke external tools. It enumerates key risk classes—tool poisoning, rug pull attacks, tool shadowing/cross-origin escalation, confused deputy, data exfiltration via legitimate channels, over-scoped tokens, supply chain attacks, message tampering/replay, and sandbox escapes—alongside best practices such as least privilege and scoped per-server credentials. Details →First reported · updated · 2 reports canopii.dev
State of MCP Security 2026 v2
Canopii's "State of MCP Security 2026" report scanned more than 11,000 published Model Context Protocol servers and found 830 graded D or F, 232 with confirmed dangerous code sinks (eval, shell injection, unsafe deserialization) that can turn prompt injection into host code execution, 184 versions that silently altered tool definitions after publication ("rug pulls"), 1,617 servers shipping dependencies with known vulnerabilities, 260 running install-time scripts, and 7 confirmed typosquats. Popular servers with 1,000+ GitHub stars were over 5x more likely to be high-risk. Details →How the wire is made
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