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CyCognito Blog

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By Igal Zeifman ・

Sample of assets impacted by NGINX nginx-poolslip vulnerability, identified by the CyCognito Platform What is CVE-2026-9256? CVE-2026-9256, publicly nicknamed “nginx-poolslip,” is a heap buffer overflow in the ngx_http_rewrite_module component of NGINX Plus and NGINX Open Source. The flaw is triggered when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. Under these conditions, NGINX underestimates the length of the output after URI escaping, producing an out-of-bounds write inside the worker process memory pool. The…

Read more about Emerging Threat: (CVE-2026-9256) NGINX Heap Buffer Overflow via Rewrite Module
By Amit Sheps ・

Modern security frameworks often fail by surfacing endless vulnerabilities without context. This blog explores how the CTEM framework’s Validation stage provides “permission to ignore” theoretical risks, allowing teams to focus engineering resources exclusively on confirmed, evidence-based, and exploitable threats.

Read more about Permission to Ignore: Leveraging the CTEM Framework to Focus on Real Risk
By Amit Sheps ・

Continuous Threat Exposure Management (CTEM) shifts security metrics from measuring activity to prioritizing impact. This refocuses reporting on urgent, validated issues and continuous testing coverage. By tracking remediation hours and material exposure reduction, organizations can effectively manage risk without creating unnecessary noise or alert fatigue.

Read more about From Activity to Impact: How CTEM Refocuses Security KPIs