New serious vulnerabilities spiked around release of Claude Mythos Preview
Notable organizations disclosed ~1,300 high- and critical-severity CVEs in June 2026, roughly 3.5× the pre-Mythos monthly record. Epoch AI's breakdown of vulnerability disclosures following Anthropic's Project Glasswing.
Severe cybersecurity vulnerability disclosures (CVEs) spiked in 2026. In June, notable organizations published around 1,500 high- and critical-severity CVEs more than 3.5× the monthly record prior to… [+561 chars]