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Debian LTS Nginx Critical RCE Denial of Service Notification DLA-4634-1

debian lts
Calendar Grey June 17, 2026
Dist Debian Esm H88
Update for Nginx in Debian LTS addresses critical remote code execution and denial of service issues with CVE-2026-9256.
A vulnerability was discoverd in Nginx, a high-performance web and reverse proxy server, which could result in remote code execution and denial of service

Summary

A vulnerability was discoverd in Nginx, a high-performance web and reverse
proxy server, which could result in remote code execution and denial of
service.

For Debian 11 bullseye, this problem has been fixed in version
1.18.0-6.1+deb11u7.

We recommend that you upgrade your nginx packages.

For the detailed security status of nginx please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/nginx

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS



Severity
critical
Lowest
Low
Medium
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Critical

Package: nginx
Version: 1.18.0-6.1+deb11u7
CVE ID: CVE-2026-9256
Debian Bug: 1137339

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