Blog Posts | Joshua Berkowitz

14 Articles

vulnerability ×

CISA Issues Urgent Warning on Actively Exploited Linux Kernel Flaw

Cybersecurity leaders and IT teams face heightened risks as the U.S. Cybersecurity and Infrastructure Security Agency (CISA) has flagged a high-severity privilege escalation vulnerability in the Linux...

CISA cybersecurity Linux kernel OverlayFS patch management privilege escalation threat intelligence vulnerability

Jun 18, 2025

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How Parser Differentials Led to a Major SAML SSO Authentication Bypass

Authentication Turned on Its Head Imagine logging in as anyone you choose—simply by exploiting a flaw in how a system verifies SAML SSO responses. This became a reality thanks to a critical vulnerabil...

authentication bug bounty ruby-saml SAML security vulnerability XML parsing

May 12, 2025

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