JetBrains Security Advisories Flag Vulnerabilities in TeamCity, YouTrack and AI Tools

The Canadian Centre for Cyber Security issued advisory AV26-1050 on October 15, 2026, warning of vulnerabilities in JetBrains Datalore, Junie CLI, TeamCity and YouTrack. A corresponding Guyana National CIRT notice covers the same products. The Canadian advisory identifies affected versions as Datalore before 2026.2, Junie CLI before 2026.1.4 and TeamCity before 2025.11.8, and lists four affected-version thresholds for YouTrack.

The supplied notices do not disclose CVE identifiers, technical impacts, severity ratings or exploitation status, leaving the urgency and potential consequences unclear. Both agencies urge users and administrators to review JetBrains security information and apply necessary updates as they become available. Organizations should inventory affected deployments and consult the vendor’s product-specific guidance, particularly for the multiple TeamCity and YouTrack version thresholds noted across the advisories.