importantSYS.SOURCE: The Hacker News• 2026-09-08T19:49:17+05:30

ChatGPT Vulnerability Exploits Hidden Prompt to Exfiltrate Gmail Data

#ai #vulnerability #data privacy #cybersecurity

A vulnerability in ChatGPT allowed attackers to secretly exfiltrate Gmail data through a hidden channel by planting a malicious prompt in conversations. Check Point Research disclosed the issue to OpenAI, which addressed the internal service but no user action was required.

Check Point Research said in a report published today that a single instruction planted in a ChatGPT conversation could cause ChatGPT to quietly work for an attacker while answering the user's question as usual.

In the company's proof of concept, that hidden work read data from the user's connected Gmail account and passed it to a second ChatGPT account through a hidden channel

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> CHERENKOV RADIATION: UNDERSTANDING SUPERLUMINAL PARTICLE EMISSION > NEIJUAN: A SOCIOLOGICAL CONCEPT OF INTENSIFIED COMPETITION WITHOUT COLLECTIVE BENEFIT > US DIESEL PRICES SURGE TO RECORD $6 PER GALLON AMID IRAN SUPPLY DISRUPTION > EXPLOITATION OF JFROG ARTIFACTORY VULNERABILITIES ENABLES ADMIN PRIVILEGE ESCALATION AND BACKDOOR DEPLOYMENT > CHINA-LINKED UNC3569 EXPLOITS SOGOU INPUT METHOD VULNERABILITY TO DEPLOY GRAYRABBIT BACKDOOR > PAPERCUT ADDRESSES ACTIVELY EXPLOITED VULNERABILITIES WITH NEW SECURITY RELEASES > CRITICAL ANALYSIS OF GPT-6 ASTRA'S CODING CAPABILITIES > CISCO FMC VULNERABILITIES EXPLOITED FOR CREDENTIAL THEFT AND QILIN RANSOMWARE DEPLOYMENT > OPENAI'S GPT-LIVE-1 API ENHANCES REAL-TIME LANGUAGE PROCESSING CAPABILITIES > GOOGLE UNVEILS GEMINI APP FOR WINDOWS PLATFORM> CHERENKOV RADIATION: UNDERSTANDING SUPERLUMINAL PARTICLE EMISSION > NEIJUAN: A SOCIOLOGICAL CONCEPT OF INTENSIFIED COMPETITION WITHOUT COLLECTIVE BENEFIT > US DIESEL PRICES SURGE TO RECORD $6 PER GALLON AMID IRAN SUPPLY DISRUPTION > EXPLOITATION OF JFROG ARTIFACTORY VULNERABILITIES ENABLES ADMIN PRIVILEGE ESCALATION AND BACKDOOR DEPLOYMENT > CHINA-LINKED UNC3569 EXPLOITS SOGOU INPUT METHOD VULNERABILITY TO DEPLOY GRAYRABBIT BACKDOOR > PAPERCUT ADDRESSES ACTIVELY EXPLOITED VULNERABILITIES WITH NEW SECURITY RELEASES > CRITICAL ANALYSIS OF GPT-6 ASTRA'S CODING CAPABILITIES > CISCO FMC VULNERABILITIES EXPLOITED FOR CREDENTIAL THEFT AND QILIN RANSOMWARE DEPLOYMENT > OPENAI'S GPT-LIVE-1 API ENHANCES REAL-TIME LANGUAGE PROCESSING CAPABILITIES > GOOGLE UNVEILS GEMINI APP FOR WINDOWS PLATFORM