tech
March 6, 2026
Anthropic's Claude found 22 vulnerabilities in Firefox over two weeks
In a recent security partnership with Mozilla, Anthropic found 22 separate vulnerabilities in Firefox — fourteen of them classified as "high-severity."
TL;DR
- Anthropic's Claude Opus found 22 vulnerabilities in Firefox.
- 14 of the discovered vulnerabilities were classified as high-severity.
- Most bugs have been fixed in Firefox 148, with remaining fixes planned for the next release.
- The AI tool was more effective at finding vulnerabilities than at creating exploits.
- The use of AI tools for open-source projects can be powerful but may also generate unhelpful submissions.
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