First reported securityweek.com
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 mallory.ai
Researchers Expose Prompt Injection and Cross-Origin Risks in AI Browsers
Researchers and vendors disclosed serious weaknesses in AI-enabled browsers, warning that agentic features undermine same-origin policy, tab isolation, and cross-origin content handling. In one chain against OpenAI's ChatGPT Atlas, Hacktron AI reported that exposed Chromium Mojo IPC interfaces reachable from allowlisted OpenAI origins were combined with a postMessage XSS on forums.openai.com and a login CSRF flaw to control browser functions, read live tab URLs, and steal OAuth codes enabling account takeover; OpenAI fixed it in Atlas 1.2025.288.15 and paid a $5,000 bounty. Brave separately detailed indirect prompt injection risks in Perplexity Comet. Details →First reported neowin.net
People are using prompt injection to trick Meta's AI into handing over Instagram accounts
Attackers used prompt injection against Meta's AI support assistant on Instagram, sending crafted messages instructing it to link an attacker-controlled email to a target account, causing the AI to send password reset links to the attacker and bypassing 2FA. The exploit was reportedly active in the wild for months, compromising thousands of accounts including a dormant Obama White House account before being patched. Details →First reported twitter.com
Instagram account takeover exploit via support chatbot prompt injection (fixed)
Reports claim Meta's AI support agent for Instagram was granted account-modification permissions without identity verification, allowing attackers to manipulate the bot into changing account emails and bypassing 2FA, leading to live account takeovers. Multiple users reported losing accounts before the issue was reportedly patched. Details →How the wire is made
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