negativeSYS.SOURCE: The Hacker News• 2026-07-14T22:57:23+05:30

Claude for Chrome Vulnerability Allows Rogue Extensions to Trigger Gmail Data Access

#ai #vulnerability #browser security #extension exploit

A vulnerability in Claude for Chrome allows rogue browser extensions to trigger unauthorized access to Gmail, Google Docs, and Calendar data through forged clicks. The flaw remains unpatched in version 1.0.80, with CVSS scores of 7.7 (High) and 9.6 (Critical) depending on user settings.

Any other browser extension that can run a script on claude.ai can still trigger Claude for Chrome tasks aimed at your Gmail, your latest Google Doc and its comments, and your Calendar.

Both this and ClaudeBleed need a rogue extension that can already run a script on claude.ai; the difference is scope. Anthropic restricted the arbitrary-prompt path in May as part of its response to the

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> OPTIMIZING LLM OUTPUT EFFICIENCY THROUGH HISTORICAL TELEGRAPHESE COMPRESSION TECHNIQUES > CISO INSIGHTS REVEAL CYBER RISK SHIFTS TOWARD INTERNAL WORKFLOWS > FBI WARNS OF ONGOING FORTIBLEED CAMPAIGN TARGETING FORTINET DEVICES WITH 86,644 CREDENTIALS COMPROMISED > CRITICAL ATLASSIAN DATA CENTER VULNERABILITY CVE-2026-21589 EXPLOITED WITHIN TWO HOURS OF DISCLOSURE > AGENTIC PENTESTING: PROOFS, LIMITATIONS, AND CONTINUOUS VALIDATION CHALLENGES > CHROME INTEGRATES JPEG XL FOR ENHANCED IMAGE COMPRESSION > EXPLOITING LARGE LANGUAGE MODELS AND DATA POISONING TO MANIPULATE CONSENSUS > ADVANCEMENTS IN SYNTHETIC BIOLOGY ENABLE CREATION OF MIRROR-LIFE ORGANISMS > CANADIAN STUDY WARNS PERMANENT DAYLIGHT SAVING TIME POSES RISKS TO SLEEP AND MENTAL HEALTH > RISING PS5 JAILBREAKS POSE SIGNIFICANT SECURITY CHALLENGES> OPTIMIZING LLM OUTPUT EFFICIENCY THROUGH HISTORICAL TELEGRAPHESE COMPRESSION TECHNIQUES > CISO INSIGHTS REVEAL CYBER RISK SHIFTS TOWARD INTERNAL WORKFLOWS > FBI WARNS OF ONGOING FORTIBLEED CAMPAIGN TARGETING FORTINET DEVICES WITH 86,644 CREDENTIALS COMPROMISED > CRITICAL ATLASSIAN DATA CENTER VULNERABILITY CVE-2026-21589 EXPLOITED WITHIN TWO HOURS OF DISCLOSURE > AGENTIC PENTESTING: PROOFS, LIMITATIONS, AND CONTINUOUS VALIDATION CHALLENGES > CHROME INTEGRATES JPEG XL FOR ENHANCED IMAGE COMPRESSION > EXPLOITING LARGE LANGUAGE MODELS AND DATA POISONING TO MANIPULATE CONSENSUS > ADVANCEMENTS IN SYNTHETIC BIOLOGY ENABLE CREATION OF MIRROR-LIFE ORGANISMS > CANADIAN STUDY WARNS PERMANENT DAYLIGHT SAVING TIME POSES RISKS TO SLEEP AND MENTAL HEALTH > RISING PS5 JAILBREAKS POSE SIGNIFICANT SECURITY CHALLENGES