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#MCP/Tool use

Sep 25

Sep 25Fri

Aug 24

Aug 24Mon
  1. PromptArmor Threat IntelligenceAI score80

    Microsoft Copilot Cowork sandbox bypass let attackers take remote control

    PromptArmor disclosed a vulnerability in Microsoft Copilot Cowork that allowed a bypass of the sandbox, letting attacker servers send commands that run in the sandbox and return results. The attack could be triggered through a prompt injection or a malicious bundled script in a user-uploaded Skill, and it could read data from Outlook, SharePoint, plugins, and chat history. The issue was reported to Microsoft on June 24, 2026 and confirmed mitigated on August 19, 2026.

    AIWhy it matters: The report traces how a malicious bundled script in an uploaded Skill escaped the sandbox and kept running after the stop button was pressed, a concrete case of agent security failure.

Aug 9

Aug 9Sun
  1. PromptArmor Threat IntelligenceAI score65

    Malicious Zoom AI Skill Can Keep Attacker Connected and Exfiltrate Data

    PromptArmor reports that a malicious Skill or indirect prompt injection can make Zoom's ZoomMate agent connect to an attacker's server and run commands. The connection can persist after the user clicks stop or closes Zoom, and the final chat output appears normal.

    AIWhy it matters: The report shows how a malicious skill or prompt injection can keep a Zoom agent connected after the user stops it, a risk to weigh before enabling agentic assistants.

Aug 4

Aug 4Tue
  1. PromptArmor Threat IntelligenceAI score67

    Atlassian Rovo can be manipulated to exfiltrate Jira and Confluence data

    PromptArmor reports that a hidden prompt injection in an uploaded file can make Atlassian Rovo send Jira tickets and Confluence documents to an attacker's URL without human approval. The attack works even when organization-wide web search is disabled, because the setting does not remove the URL retrieval tool. PromptArmor says it disclosed the issue to Atlassian on May 23, 2026, and that Rovo remained vulnerable at publication on August 5, 2026.

    AIWhy it matters: The report traces a full indirect prompt injection chain in Rovo, showing how a disabled web search setting still leaves a data exfiltration path open.