Is CVE-2026-32647 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-32647 being exploited in the wild.

How severe is CVE-2026-32647?

High severity, with a CVSS score of 7.8, published 24 March 2026.

Which products and versions are affected?

NGINX Open Source All versions built with ngx_http_mp4_module and mp4 directive enabled.

Is there a fix for CVE-2026-32647?

A patch was published on 2026-04-23: Red Hat released initial security updates (RHSA-2026:10065) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-32647 attacked?

It is attacked with local access, in a hosted service.

Am I affected by CVE-2026-32647?

Check whether you run NGINX Open Source at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-32647: NGINX Open Source and Plus buffer overflow in ngx_http_mp4_module

CVE-2026-32647 · Severity: high · CVSS 7.8 · Published 2026-03-24

NGINX, a widely used web and proxy server, contains a vulnerability in its MP4 video processing module. An attacker who can provide a malicious video file to the server could cause the software to crash or potentially execute unauthorized code. This could lead to a disruption of web services or unauthorized access to the server's memory and data.

Technologies: NGINX Open Source. Vendors: NGINX.

Quick answers

Is CVE-2026-32647 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-32647 being exploited in the wild.
How severe is CVE-2026-32647?: High severity, with a CVSS score of 7.8, published 24 March 2026.
Which products and versions are affected?: NGINX Open Source All versions built with ngx_http_mp4_module and mp4 directive enabled.
Is there a fix for CVE-2026-32647?: A patch was published on 2026-04-23: Red Hat released initial security updates (RHSA-2026:10065) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-32647 attacked?: It is attacked with local access, in a hosted service.
Am I affected by CVE-2026-32647?: Check whether you run NGINX Open Source at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability exists in the ngx_http_mp4_module of NGINX Open Source and NGINX Plus. The flaw is triggered when the module processes a specially crafted MP4 file, leading to a buffer over-read or over-write in the NGINX worker memory. This issue requires the NGINX instance to be built with the ngx_http_mp4_module and have the 'mp4' directive active in the configuration. An attacker with the ability to trigger the processing of such a file (typically requiring local or low-privileged access to upload or point the server to the file) can cause a denial of service via process crash or potentially achieve arbitrary code execution. Red Hat has released security advisories (e.g., RHSA-2026:13634) providing patches for affected Enterprise Linux versions.

Affected products

NGINX NGINX Open Source All versions built with ngx_http_mp4_module and mp4 directive enabled
NGINX NGINX Plus All versions built with ngx_http_mp4_module and mp4 directive enabled
Red Hat Red Hat Enterprise Linux 8, 9, 10.0, 10.1

Timeline

2026-03-24: disclosed: Initial publication date
2026-04-23: patched: Red Hat released initial security updates (RHSA-2026:10065)

References

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