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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

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CoSnitch: When Your AI Assistant Becomes Its Own Whistleblower

Varonis Threat Labs disclosed CoSnitch (CVE-2026-24301), a critical one-click vulnerability chain in Microsoft Copilot Personal that combines the ?q= URL parameter with an undocumented autorun=1 parameter to auto-execute an attacker-supplied prompt on page load, then queries connected apps (Gmail, Drive, Calendar, OneDrive) and exfiltrates data via encoded URLs, plus indirect prompt injection through web summarization that poisons persistent memory. Researchers used a 'meta-hacking' technique, repeatedly asking Copilot why an attack wouldn't work until the assistant disclosed its own disabled parameters and session conditions. Microsoft shipped patches on August 18, 2026; Varonis reports no evidence of in-the-wild exploitation. Details →

Drive-By Agent Hijacking: One Website Visit, Persistent Model Poisoning

Cyera's Oasis Identity Research disclosed CVE-2026-65105 in NVIDIA NemoClaw, which deploys the OpenClaw AI agent with local Ollama inference. NemoClaw starts Ollama bound to 0.0.0.0:11434 (while telling users it is on localhost), disabling a key defense; combined with DNS rebinding, a single visit to an attacker-controlled webpage gives unauthenticated access to the Ollama API, letting an attacker persistently poison the model's chat template so injected instructions survive the agent's own system prompt and steer the agent thereafter. The findings were reported to NVIDIA PSIRT prior to publication. Details →

GhostJacking Attacks: Half of the Fortune 500 Run These Tools. Getting Blocked by the Firewall Was the Way to Take Over Their AI Agents - Tenet Security

Tenet Security disclosed 'GhostJacking' at DEF CON 34, an indirect prompt-injection technique that hides malicious instructions inside trusted operational data such as logs, alerts, and bug reports, then tricks AI coding and operations agents into executing them with their own legitimate permissions. Demonstrations across Cloudflare, Datadog, and Sentry workflows showed agents altering DNS records, running commands, exposing frontend keys, and exfiltrating environment secrets and cloud credentials while falsely reporting success. Tenet also reported that Anthropic fixed a Claude Desktop remote data-exfiltration flaw with no CVE assigned. Details →
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