Anthropic: Mythos Detected 23,000 Potential Vulnerabilities Across 1,000 OSS Projects
Many findings have been confirmed to be critical or high-severity vulnerabilities and the number will continue to increase. The post Anthropic: Mythos Detected 23,000 Potential Vulnerabilities Across 1,000 OSS Projects appeared first on SecurityWeek.
Anthropic says its Claude Mythos model discovered thousands of severe vulnerabilities across more than 1,000 open source software (OSS) projects.
According to the AI giant, Mythos Preview has identified more than 23,000 potential vulnerabilities. Of these, 1,900 have been reviewed by external security firms, and 1,726 have been confirmed, including over 1,000 rated ‘high’ or ‘critical’ severity.
The findings are still being reviewed, and Anthropic estimates that nearly 3,900 critical and high-severity vulnerabilities will be confirmed based only on current findings. As the scans are ongoing, the company believes the number of severe vulnerabilities may reach 6,200.
Related breach coverage
- Anthropic’s Project Glasswing: 10,000+ Vulnerabilities Found in One Month, and the Patching Problem Has Never Been More Obvious2026-05-24
Anthropic said its AI Project Glasswing found over 10,000 serious vulnerabilities in one month, exposing a growing patching gap. Anthropic announced on Friday that Project Glasswing, its defensive cybersecurity initiative built around Claude Mythos Preview, has uncovered more than 10,000 high- or critical-severity vulnerabilities in the month since the program went live. The number is […]
- Anthropic Expanding Mythos Access to 150 New Organizations2026-06-02
Only approximately 50 companies have had access to Mythos until now and they have found thousands of vulnerabilities in their products. The post Anthropic Expanding Mythos Access to 150 New Organizations appeared first on SecurityWeek.
- Critical Windows Netlogon Vulnerability in Attackers’ Crosshairs2026-06-01
Organizations are advised to patch CVE-2026-41089 as soon as possible, given its severity, the potential ongoing exploitation. The post Critical Windows Netlogon Vulnerability in Attackers’ Crosshairs appeared first on SecurityWeek.
- Chrome 148 Update Patches 151 Vulnerabilities2026-05-29
The browser update resolves critical-severity security defects that could potentially lead to remote code execution. The post Chrome 148 Update Patches 151 Vulnerabilities appeared first on SecurityWeek.