--- title: Google Gemini Prompt Injection Flaw Exposed Private... description: A security vulnerability in Google Gemini allowed attackers to bypass Calendar privacy controls through indirect prompt injection. By embedding malicious... canonical: https://daily.dev/posts/google-gemini-prompt-injection-flaw-exposed-private-calendar-data-via-malicious-invites-2bakvkxwo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Google Gemini Prompt Injection Flaw Exposed Private Calendar Data via Malicious Invites | daily.dev og:description: A security vulnerability in Google Gemini allowed attackers to bypass Calendar privacy controls through indirect prompt injection. By embedding malicious... og:url: https://daily.dev/posts/google-gemini-prompt-injection-flaw-exposed-private-calendar-data-via-malicious-invites-2bakvkxwo og:image: https://api.daily.dev/og/posts/2bAKVKxWo.png og:image:alt: Google Gemini Prompt Injection Flaw Exposed Private Calendar Data via Malicious Invites og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Google Gemini Prompt Injection Flaw Exposed Private Calendar Data via Malicious Invites **[The Hacker News](https://daily.dev/sources/thn)** · 5 min read · 1 upvotes · 0 comments ## Summary A security vulnerability in Google Gemini allowed attackers to bypass Calendar privacy controls through indirect prompt injection. By embedding malicious prompts in calendar invites, attackers could extract private meeting data when users asked Gemini innocent questions about their schedule. The flaw has been patched, but highlights broader AI security risks including privilege escalation in Google Cloud Vertex AI, vulnerabilities in AI coding assistants like Cursor and Claude Code, and the challenge of securing LLM-powered applications against prompt injection attacks. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Exploiting Google Gemini to Abuse Calendar Invites Illustrates AI Threats](https://daily.dev/posts/exploiting-google-gemini-to-abuse-calendar-invites-illustrates-ai-threats-j6bbmlvcw) · Security Boulevard · 0 upvotes · 0 comments - [Unplug Gemini from email and calendars, says cybersecurity firm](https://daily.dev/posts/unplug-gemini-from-email-and-calendars-says-cybersecurity-firm-egl7ezanv) · CSO Online · 0 upvotes · 0 comments - [Indirect Malicious Prompt Technique Targets Google Gemini Enterprise](https://daily.dev/posts/indirect-malicious-prompt-technique-targets-google-gemini-enterprise-frfvbvclj) · Security Boulevard · 0 upvotes · 0 comments - [Cybersecurity Researchers Uncover Flaw in Google AI Coding Tool](https://daily.dev/posts/cybersecurity-researchers-uncover-flaw-in-google-ai-coding-tool-38fhs0zr4) · DevOps.com · 1 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#security](https://daily.dev/tags/security), [#google](https://daily.dev/tags/google), [#llm](https://daily.dev/tags/llm), [#prompt-injection](https://daily.dev/tags/prompt-injection) [View this post on daily.dev](https://daily.dev/posts/google-gemini-prompt-injection-flaw-exposed-private-calendar-data-via-malicious-invites-2bakvkxwo) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Google Gemini Prompt Injection Flaw Exposed Private Calendar Data via Malicious Invites","url":"https://daily.dev/posts/google-gemini-prompt-injection-flaw-exposed-private-calendar-data-via-malicious-invites-2bakvkxwo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/google-gemini-prompt-injection-flaw-exposed-private-calendar-data-via-malicious-invites-2bakvkxwo"},"datePublished":"2026-01-19T18:07:05.622Z","dateModified":"2026-08-24T06:51:22.076Z","description":"A security vulnerability in Google Gemini allowed attackers to bypass Calendar privacy controls through indirect prompt injection. 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