HashJack - Vulnerability

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
November 26, 2025
Last Seen
December 9, 2025

Related Threat Clusters

  • Gartner Advises Blocking AI Browsers Due to Security Risks

    Gartner has recommended that organizations block all AI browsers, including Perplexity Comet and OpenAI’s ChatGPT Atlas, due to significant cybersecurity risks. The analysts noted that default settings in these browsers…

    4 articles · Updated December 8, 2025
  • Security Flaws in AI Browsers Expose Users to Prompt Injection Attacks

    AI browsers, including OpenAI's Atlas and Perplexity’s Comet, are facing significant security vulnerabilities due to prompt injection attacks. These attacks allow malicious actors to manipulate AI systems by injecting…

    11 articles · Updated November 11, 2025
  • HashJack Attack Exploits AI Browsers via URL Manipulation

    Cato Networks has identified a new cybersecurity vulnerability named 'HashJack' that allows attackers to manipulate AI browser assistants by embedding malicious prompts in URL fragments after the '#' symbol. This…

    11 articles · Updated November 27, 2025

Recent Intelligence Reports

  • Gartner Calls For Pause on AI Browser Use — Infosecurity-Magazine · December 9, 2025
  • HashJack Indirect Prompt Injection Weaponizes Websites — Infosecurity-Magazine · November 26, 2025

CVSS v3.1 Breakdown