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#cve-2026-21876

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Help Net SecurityApr 26, 2026high

Week in review: Claude Mythos finds 271 Firefox flaws, Vercel breach

Exploited15 min readcve-2026-20133 cve-2026-21876

Help Net SecurityApr 22, 2026critical

Progress Software fixes sneaky WAF bypass vulnerability (CVE-2026-21876)

2 min readcve-2026-21876 cve-2026-3517

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