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Top 10 vulnerabilities of the week (Oct 20–26, 2026): 8 actively exploited

This week's 10 most urgent vulnerabilities, including 8 CISA confirmed as actively exploited, ranked from CISA and NIST data.

Top 10 vulnerabilities, 8 actively exploited, Oct 20–26, 2026

The 10 vulnerabilities from the past seven days that most need attention, ranked by a fixed rule: flaws CISA confirmed as actively exploited come first (those used in ransomware at the top, then newest first), followed by the highest-scoring Critical CVEs published by NIST’s National Vulnerability Database.

# CVE What it affects Why it ranks Date
1 CVE-2026-110447 Collabora Online – Built-in CODE Server OS Command Injection Vulnerability Actively exploited (CISA KEV) October 23, 2026
2 CVE-2026-114625 Arista VeloCloud Orchestrator SQL Injection Vulnerability Actively exploited (CISA KEV) October 23, 2026
3 CVE-2026-106931 EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability Actively exploited (CISA KEV) October 20, 2026
4 CVE-2026-96656 Plex Media Server External Control of File Name or Path Vulnerability Actively exploited (CISA KEV) October 20, 2026
5 CVE-2026-96655 Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability Actively exploited (CISA KEV) October 20, 2026
6 CVE-2026-96654 Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability Actively exploited (CISA KEV) October 20, 2026
7 CVE-2026-96652 Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability Actively exploited (CISA KEV) October 20, 2026
8 CVE-2026-110936 Siemens Software Center Uncontrolled Search Path Element Vulnerability Actively exploited (CISA KEV) October 20, 2026
9 CVE-2026-97785 Improper authentication in AAD App Proxy allows an unauthorized attacker to elevate privileges over a network. CVSS 10 Critical (NVD) October 22, 2026
10 CVE-2026-83938 Missing authentication for critical function in Azure Kubernetes Configuration Service allows an unauthorized attacker to elevate privileges over a network. CVSS 10 Critical (NVD) October 22, 2026

Descriptions are quoted from CISA and NVD. Always confirm fixed versions in the vendor’s own advisory before prioritizing.

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