First reported embracethered.com
Lead dispatch
First reported island.io
AgentBaiting: How Fake AI Skills Deliver Malware at Scale
Island security researchers uncovered the FakeGit campaign, which used roughly 7,600 malicious GitHub repositories—over 800 posing as AI Skills or MCP servers—to deliver SmartLoader malware that installs the StealC information stealer. The campaign introduces a technique called AgentBaiting, in which AI agents such as Claude Code, Gemini, and ChatGPT autonomously discover the attacker repositories, treat the malicious README as legitimate documentation, and pass installation instructions to users; the operation recorded over 14 million downloads.supply-chain · tool-abuse · malware-delivery · agentbaiting
mcp · ai-agents · ai-skills · llm · copilot
Severity
0.75
The wire · latest
First reported pillar.security
The Week of Sandbox Escapes
Pillar Security researchers demonstrated seven sandbox-escape techniques against four AI coding agents — Cursor, OpenAI's Codex, Google's Gemini CLI and Antigravity — where a sandboxed agent writes workspace files that trusted tools running outside the sandbox (Python extensions, Git integrations, hook engines, Docker daemons) later execute. Prompt injection planted in a README, issue, dependency, or diff triggers local command execution on the developer's machine; one Cursor flaw is tracked as CVE-2026-48124 and fixed in version 3.0.0, with most issues patched and vendor-acknowledged. Details →First reported · updated · 5 reports wiz.io
GhostApproval: AI Coding Assistant Trust Boundary Flaw
Wiz researchers disclosed GhostApproval (CVE-2026-12958 and related), a symlink-following vulnerability pattern (CWE-61 plus CWE-451 UI misrepresentation) affecting six top AI coding assistants: Amazon Q Developer, Anthropic Claude Code, Augment, Cursor, Google Antigravity, and Windsurf. A malicious repository disguises a symlink as an innocuous config file so that when the agent 'sets up the workspace' it writes an attacker SSH key to ~/.ssh/authorized_keys — sometimes before any confirmation dialog — while the human-in-the-loop approval prompt conceals the true target, enabling remote code execution. AWS, Cursor, and Google fixed the issue; two vendors went silent and one called it outside its threat model. Details →First reported strobes.co
CVE-2026-23744 - CVE Details, Severity, and Analysis | Strobes VI
CVE-2026-23744 is a critical (CVSS 9.8) remote code execution vulnerability in MCPJam Inspector versions 1.4.2 and earlier, a local-first development platform for MCP servers. Because the tool binds to 0.0.0.0 and its /api/mcp/connect endpoint extracts command and args without security checks, an attacker can send a crafted, unauthenticated HTTP request to trigger arbitrary command execution with no user interaction; public PoCs and vendor patches are available. Details →First reported · updated · 3 reports theregister.com
Red teamers turned Claude Desktop into a double agent to do their evil bidding
Oasis Security disclosed "PromptFiction," a vulnerability in Anthropic's Claude Desktop where a single click on a trusted-looking claude:// URL silently submitted attacker-controlled prompts to the assistant with no user confirmation. Chained with the earlier "Claudy Day" trio of flaws, it could enable silent exfiltration of prior conversations and — when Anthropic's official Filesystem MCP server is installed — file read/write, persistence, and remote code execution. Anthropic has fixed the flaw. Details →First reported · updated · 3 reports catonetworks.com
DuneSlide: Two Critical RCE vulnerabilities
Cato AI Labs disclosed two critical vulnerabilities in Cursor IDE, dubbed DuneSlide (CVE-2026-50548 and CVE-2026-50549, both CVSS 9.8), that allow zero-click prompt injection to escape the editor's command sandbox and achieve remote code execution. CVE-2026-50548 abuses the run_terminal_cmd tool's working_directory parameter to add attacker-chosen folders to the allowed-write list, letting an attacker overwrite the cursorsandbox binary or shell startup files and turn sandboxed commands into full system compromise. Cursor patched both in version 3.0, released April 2; earlier 2.x builds remain exposed. Details →First reported arxiv.org
A Security Analysis of the OpenClaw AI Agent Framework
Researchers detailed three now-patched high-severity flaws (GHSA-hjr6-g723-hmfm, GHSA-9969-8g9h-rxwm, GHSA-575v-8hfq-m3mc; CVE-2026-46817, CVE-2026-55200) in the OpenClaw personal AI assistant framework that compose into a complete unauthenticated remote code execution path — from an LLM tool call triggered via a WhatsApp message to command execution on the host. The chain abuses OS command injection and an incomplete disallowed-input filter in the exec allowlist, whose closed-world lexical parsing is defeated by shell line continuation, busybox multiplexing, and GNU option abbreviation; a companion arXiv analysis taxonomizes 470 advisories and shows a malicious plugin skill bypassing the exec pipeline entirely. Details →First reported microsoft.com
AutoJack: How a single page can RCE the host running your AI agent | Microsoft Security Blog
Microsoft researchers disclosed AutoJack, an exploit chain in AutoGen Studio where untrusted web content rendered by a browsing agent can reach a local MCP WebSocket and spawn arbitrary processes on the host, crossing the localhost trust boundary to achieve RCE. The issue was reported to MSRC and hardened upstream in commit b047730; the vulnerable MCP WebSocket surface was never shipped in a PyPI release. Details →How the wire is made
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