Mozilla Patches 423 Firefox Vulnerabilities with Claude Mythos and Other AI Models
ID: 6ef1db6c-4980-5cfe-b2c0-5c9a61baeac3
STIX ID: report--6ef1db6c-4980-5cfe-b2c0-5c9a61baeac3
Feed Name: cybersecurityNews.com
Threat Score
Mozilla fixed 423 Firefox security bugs in April 2026—271 of which were discovered using an agentic AI pipeline built around Anthropic’s Claude Mythos Preview—with a large portion rated high severity and including sandbox-escape primitives and multiple CVEs; the report describes the AI-driven discovery, validation, and CI-integration plans.
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