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CRITICAL — Microsoft Exchange CVE-2026-42897 zero-day actively exploited; OWA mailboxes at risk◆HIGH — Shai-Hulud worm clones detected in npm attacks targeting developer credentials◆HIGH — INTERPOL Operation Ramz: 201 arrests, 382 suspects identified across MENA cybercrime networks◆HIGH — Grafana source code stolen via compromised GitHub token; ransom rejected◆MED — Canvas education platform defaced with ransom demand, disrupting US schools and universities◆CRITICAL · NGINX zero-day under active exploitation◆CRITICAL · Microsoft Exchange zero-day exploitation continues◆CRITICAL · Cisco SD-WAN zero-day under wild exploitation◆CRITICAL — Microsoft Exchange CVE-2026-42897 zero-day actively exploited; OWA mailboxes at risk◆HIGH — Shai-Hulud worm clones detected in npm attacks targeting developer credentials◆HIGH — INTERPOL Operation Ramz: 201 arrests, 382 suspects identified across MENA cybercrime networks◆HIGH — Grafana source code stolen via compromised GitHub token; ransom rejected◆MED — Canvas education platform defaced with ransom demand, disrupting US schools and universities◆CRITICAL · NGINX zero-day under active exploitation◆CRITICAL · Microsoft Exchange zero-day exploitation continues◆CRITICAL · Cisco SD-WAN zero-day under wild exploitation◆
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● CRITICAL/ MAY 19, 2026TODAY’S BRIEFING — #062

Microsoft Exchange zero-day in active use; npm worm clones spread after source leak

Microsoft Exchange zero-day under active exploitation with no patch available. Shai-Hulud worm source code leaked, spawning clones targeting npm developers. INTERPOL Operation Ramz arrested 201 cybercriminals across MENA region.

CVE-2026-42897Microsoft Exchange — XSS vulnerability in Outlook Web Access; under active attack, no patch availableCVE-2026-8043Ivanti Xtraction — Critical RCE flaw (CVSS 9.6); patched
Zero-DaySupply ChainMalwareTechnologyEducationGovernment
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