Google's PageBreak AI agent found over 500 XSS flaws in its own web apps
Google says PageBreak, an internal AI agent built by its Product Security team, has found more than 500 cross-site scripting vulnerabilities in its own web applications. Each suspected flaw is confirmed by a non-AI validator that runs a real payload, which Google says brings false positives close to zero.
BragJack shows how one rogue extension can steer AI browser agents
Gal Weizman’s BragJack research shifts attention from single chatbot prompts to the browser layer, where an installed extension can influence several AI browsing agents.
HEIF flaw let Hacktron reach limited GitHub access through OpenAI’s forum
Hacktron says it exploited CVE-2026-32882 in the libheif version used by OpenAI’s community forum, then abused SSO to control employee accounts; one linked Codex account could create a harmless pull request without reading OpenAI’s internal source code.
GPUThor Attack Defeats ECC Protection on Nvidia AI GPUs
University of Toronto researchers disclosed GPUThor, a Rowhammer attack that bypasses ECC memory protection on Nvidia GPUs, producing up to 377,000 bit flips per gigabyte and, in some cases, root access to the host machine. Nvidia published mitigation guidance on August 25.
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