Claude AI Uncovers 22 Firefox Vulnerabilities in Two Weeks

Anthropic’s Claude Opus 4.6 autonomously discovered large numbers of vulnerabilities in open-source projects and, during a collaboration with Mozilla, found 22 Firefox bugs (14 high-severity) that were promptly patched in Firefox 148.0; the model produced only two working exploits that required sandbox disabling, and the report urges CVD, AI-validated patches, and automated verification to manage the growing risk from AI-enabled vulnerability discovery.