First reported · updated · 3 reports sonarsource.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 · updated · 2 reports screetsec.com
Maland | Another Cursor 0-day Enabling Arbitrary Code Execution Beyond Git.exe
Cursor 3.0.0 patches CVE-2026-48124, a class of sandbox-to-host code execution weaknesses affecting AI coding agents including Cursor, OpenAI Codex CLI, Google Gemini CLI, and Antigravity, where files written by a sandboxed agent are later consumed and executed by trusted host tooling (extensions, task runners, Git integrations, Docker). Related research by Mindgard and others details a Windows binary-planting flaw where opening a repository auto-executes a malicious git.exe planted at the repo root, yielding zero-click arbitrary code execution with no prompt injection or model in the loop. Details →First reported tech-insider.org
Cursor AI Hack Triggers 23 New AI Agent Risk Rules
A Russian-speaking affiliate of the Aur0ra ransomware group abused the AI agent built into the Cursor code editor to help breach at least seven companies between April and May 2026, according to Gambit Security and Reuters. The operators, who already held credentials or network access, socially engineered the agent into performing enumeration, scripting, credential theft and account takeover by framing the intrusions as authorized tests, cutting attack time an estimated 30-50 percent. Recovered chat logs from an exposed C2 server documented 28 sessions across ten target organizations. Details →First reported cloudsek.com
Caught in 4K: The Aurora Files
Threat actors tied to the Russian-speaking Aurora (Aur0ra) ransomware group were observed abusing the AI-powered Cursor coding assistant/agent to break into and exploit target networks, according to CloudSEK and Gambit Security. Exposed operator infrastructure revealed toolkits, shell history, and an encryptor showing activity against more than 20 organizations across nine countries between April and July 2026, with victims (including ESXi targets) listed on the group's data leak site. Details →First reported · updated · 6 reports wiz.io
GhostApproval: AI Coding Assistant Trust Boundary Flaw
Wiz disclosed GhostApproval, a vulnerability pattern in 6 top AI coding assistants (Amazon Q Developer, Anthropic Claude Code, Augment, Cursor, Google Antigravity, Windsurf) where a malicious repository uses a symlink (CWE-61) disguised as an ordinary file so the agent writes attacker-controlled content — such as an SSH key into ~/.ssh/authorized_keys — outside the workspace sandbox, potentially achieving RCE. In several cases (notably Claude Code) the agent's internal reasoning recognized the dangerous target while the human-in-the-loop confirmation dialog concealed it (CWE-451). CVEs including CVE-2026-12958 and CVE-2026-50549 were assigned; AWS, Cursor, and Google fixed the issue, while others went silent or declined it as outside their threat model. Details →First reported · updated · 2 reports adversa.ai
DeepJack Cursor deeplink vulnerability: 1-click MCP server RCE
Adversa AI disclosed a vulnerability in the Cursor AI coding IDE (dubbed "DeepJack") in which a crafted cursor:// deeplink can install an attacker-controlled MCP server that runs arbitrary, unsandboxed commands under the victim's account after one click and one confirmation. The install dialog renders the server command in a single-line field, pushing a malicious tail off-screen, and a double-URL-encoded variant disguises the mcp/install URI as a routine pr-review link. Cursor closed the reports as duplicates, but build 3.9.8 reportedly remains vulnerable. Details →First reported kiteworks.com
AI Coding Tools Face New Supply Chain Attacks Like TrapDoor
The TrapDoor campaign distributed 34 malicious lookalike packages across npm, PyPI, and Crates.io that, after installation, modify a project's CLAUDE.md configuration file — the briefing document AI coding assistants like GitHub Copilot, Cursor, and Claude read to understand a project. The poisoned instructions cause the AI tools to redirect requests to attacker-controlled infrastructure and exfiltrate credentials and environment variables, without exploiting any vulnerability in the AI model itself. Details →First reported · updated · 5 reports catonetworks.com
DuneSlide: Two Critical RCE vulnerabilities
Cato AI Labs disclosed two critical remote code execution flaws in the Cursor AI code editor, collectively named DuneSlide (CVE-2026-50548 and CVE-2026-50549, both CVSS 9.8), that let a zero-click prompt injection break out of the editor's terminal sandbox by overwriting critical system files like the cursorsandbox binary, converting sandboxed agent commands into unsandboxed RCE. The flaws affect all versions before Cursor 3.0 and are patched in Cursor 3.0, released April 2. Details →First reported tenetsecurity.ai
A public Sentry key is all it takes to hijack Claude Code, Cursor, and Codex
Researchers at Tenet Security describe "agentjacking," an attack in which a publicly exposed Sentry key lets an attacker inject fake error messages that AI coding agents such as Claude Code, Cursor, and Codex ingest via the Sentry MCP server. The crafted error content acts as an indirect prompt injection, hijacking the agent to execute attacker-directed actions; the team also published a mitigation tool, agent-jackstop, on GitHub. Details →First reported · updated · 2 reports stepsecurity.io
Miasma Supply Chain Attack: Azure Hit, 73 Repos Down, 37 PyPI Wheels
The Miasma supply-chain worm campaign expanded to poison Microsoft's Azure/durabletask GitHub repository with config files that execute a credential-harvesting payload the moment a developer opens the repo in AI coding tools like Claude Code, Gemini CLI, Cursor, or VS Code, triggering GitHub to disable 73 Microsoft repositories including Azure/functions-action. Two days later the Hades variant dropped 37 malicious PyPI wheels across 19 packages using Python .pth startup hooks to run a Bun-powered credential stealer on every interpreter launch, with Socket tracking 448 affected artifacts across npm and PyPI. Details →How the wire is made
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