First reported · updated · 3 reports darkreading.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 bleepingcomputer.com
Google says AI helped Chrome fix 1,072 security bugs in two releases
Google reports that AI-powered tooling helped Chrome fix 1,072 security bugs across the Chrome 149 and 150 releases, more than all previous 23 milestones combined. The company says it now uses large language models across vulnerability management—discovery, reproduction, severity triage, and candidate patch generation—building on Project Zero's Naptime, DeepMind's Big Sleep agent, and a 2026 Gemini-powered agent harness that scans the Chrome codebase, including finding a 13-year-old sandbox escape. Details →First reported darkreading.com
Claude Mythos — Hype vs. Reality: What Security Teams Need to Know
A Dark Reading Reporters' Notebook discussion analyzes Anthropic's Claude Mythos, a frontier model said to discover and exploit critical zero-day vulnerabilities in decades-old software with little prompting, and the associated Project Glasswing initiative that shares the model with select defensive partners including AWS, Google, Microsoft, CrowdStrike, and Palo Alto Networks. The journalists weigh how seriously security teams should take the risks of powerful, bug-hunting LLMs versus the surrounding hype. Details →First reported propublica.org
Microsoft Struggling With Hundreds of AI-Discovered Security Bugs
ProPublica reports that Microsoft is struggling to patch hundreds of security vulnerabilities discovered by Anthropic's unreleased Claude Mythos Preview model under Project Glasswing, which found 90 'critical' and 141 'important' bugs in SharePoint in April alone. Internal recordings show engineers in a 'mad dash' to close flaws before the model's capabilities become available to adversaries like China, with Microsoft triaging critical and important bugs first. Details →First reported thehackernews.com
Kimi K3 Agents Found Redis Zero-Days and Built RCE Exploit, Researchers Say
Researchers report that Kimi K3 AI agents autonomously discovered multiple Redis zero-day memory-corruption flaws and built working authenticated RCE proof-of-concept exploits against stock Redis 6.2.22, 7.4.9, 8.6.4, and 8.8.0; the chains abuse RESTORE (plus EVAL/XGROUP and the RedisBloom module), and Redis shipped seven security releases on July 23 to fix the Streams shared-NACK use-after-free and RedisBloom/TDigest out-of-bounds writes. Defenders are advised to upgrade and revoke RESTORE from accounts that do not need it. Details →First reported knostic.ai
OpenAnt: Read the LLM Vulnerability Paper
Knostic announced OpenAnt, described as an open source LLM vulnerability discovery project, now published on arXiv. The article provides minimal detail beyond the project's existence and its framing as a leading open source effort for finding LLM vulnerabilities. Details →How the wire is made
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