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Anthropic: Claude Mythos identified 10,000+ software flaws

ID: 83ad59d5-f430-5bfa-b907-1443e18ef597

STIX ID: report--83ad59d5-f430-5bfa-b907-1443e18ef597

Feed Name: Help Net Security

Threat Score
72/100

Date Published: 2026-05-26

Date Updated: 2026-05-26

Author: Anamarija Pogorelec

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Anthropic’s Project Glasswing and the Claude Mythos LLM have scanned and analyzed over 1,000 open-source projects, identifying 23,019 issues including 6,202 high- or critical-severity vulnerabilities (with >90% validation among assessed findings); Mythos can also construct exploits (a wolfSSL flaw was constructed and patched), and Anthropic is providing tools and partnerships to help triage and patch while warning of misuse risks.

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