First reported · updated · 5 reports adversa.ai
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 · updated · 2 reports calcalistech.com
Israeli researchers uncover zero-click attacks targeting AI browsers | Ctech
Israeli researchers demonstrated zero-click attacks against AI-powered browsers, reportedly hijacking agentic assistants like Anthropic's Claude and OpenAI's ChatGPT Atlas via malicious content embedded in emails and X posts. The attacks use indirect prompt injection that executes without any user interaction once the AI browser processes the poisoned content. Details →First reported · updated · 2 reports darkreading.com
AI Browsers Vulnerable to 'PleaseFix' Zero-Click Agent Hijacking
Zenity Labs disclosed a new zero-click vulnerability class dubbed 'PleaseFix' at Black Hat USA 2026 that lets attackers hijack AI browser agents — including Claude in Chrome, Gemini in Chrome, Perplexity Comet, ChatGPT Atlas, and Copilot Edge — by hiding malicious instructions in emails and webpages the agents ingest. Because the agents combine and act on content from multiple sources without reliably separating trusted from untrusted input, they break the same-origin security model, allowing an adversary to weaponize the agent and reach sensitive data, accounts, and connected services. Details →First reported nhimg.org
AI browser guardrail bypass exposes a new data theft path
LayerX Security describes a "BioShocking" attack that games an AI browser into violating its guardrails by establishing a false reality, enabling data theft, code copying, and system command execution. The attack exploits the browser-mediated trust boundary, using indirect or staged instructions embedded in webpage context that pass prompt filters yet still steer the model into malicious enterprise actions inside an authenticated session. Details →First reported · updated · 2 reports manifold.security
ClaudeBleed Reopened: Browser Extensions Can Still Push Claude for Chrome to Read Your Gmail
Manifold Security researcher Ax Sharma disclosed two unpatched vulnerabilities in Anthropic's Claude for Chrome extension (v1.0.80). Any browser extension with a content script on claude.ai can inject a DOM element and dispatch a synthetic click that Claude treats as a legitimate user action, triggering one of nine hardcoded workflows that read Gmail, Google Docs, and Calendar or act on Salesforce; a second flaw initializes the side panel in privileged mode via a ?skipPermissions=true URL parameter with no consent. Rated CVSS 7.7 in default mode and 9.6 Critical when 'Act without asking' is enabled, and reportedly still reproducible after eight releases since being reported to Anthropic in May. Details →First reported thehackernews.com
New BioShocking Attack Tricks AI Browsers Into Leaking User Credentials
LayerX disclosed a technique called BioShocking that convinces AI browsers they are playing a game, tricking them into copying a user's credentials and sending them to an attacker. Six AI browsers and assistants were affected, including OpenAI's ChatGPT Atlas, Perplexity's Comet, and Anthropic's Claude browser extension. Details →How the wire is made
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