NGINX
CVE-2026-32647: NGINX ngx_http_mp4_module vulnerability
NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to trigger a buffer over-read or over-write to the NGINX worker memory resulting in its termination or possibly code execution, using a specially crafted MP4 file.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| NGINX Open Source 1.29 | 1.29.7 or later |
| NGINX Open Source 1.1 | 1.28.3 or later |
| NGINX Plus R36 | R36 P3 or later |
| NGINX Plus R35 | R35 P2 or later |
| NGINX Plus R34 | * or later |
| NGINX Plus R33 | * or later |
| NGINX Plus R32 | R32 P5 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to trigger a buffer over-read or over-write to the NGINX worker memory resulting in its termination or possibly code execution, using a specially crafted MP4 file. This issue affects NGINX Open Source and NGINX Plus if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.