CVE-2026-9256

highcovered by 1 sourcefirst seen 2026-07-10

A remote, anonymous attacker can exploit a vulnerability in NGINX and NGINX Plus to conduct a denial of service attack and potentially execute arbitrary code.

CSIRTS triage

What: A remote, anonymous attacker can exploit a vulnerability in NGINX and NGINX Plus to conduct a denial of service attack and potentially execute arbitrary code.
Who is affected: Deployments of NGINX Open Source and NGINX Plus.
Urgency: Remediation is high urgency due to the potential for denial of service and code execution.
Action: Update to the latest version immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Moderate exploitation risk4.3% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 90% of all EPSS-scored CVEs.

Advisory coverage (1)

high[UPDATE] [high] NGINX Open Source and NGINX Plus: Vulnerability allows denial of service and potentially code …cert-bund · 2026-07-10

External references

NVD record for CVE-2026-9256

CVE.org record

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