CVE-2026-27784 — NGINX ngx_http_mp4_module vulnerability

Description (CNA)

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source 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.

Affected (CNA)

Vendor / product	Versions
F5 / NGINX Open Source	affected 1.29.0 before 1.29.7; affected 1.1.19 before 1.28.3

CWE

CWE-190

References

https://my.f5.com/manage/s/article/K000160364

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in NGINX Open Source, specifically within the ngx_http_mp4_module. An attacker can exploit this memory corruption vulnerability by providing a specially crafted MP4 file. This can lead to an over-read or over-write of NGINX worker memory, causing the worker to terminate and resulting in a Denial of Service (DoS). This issue affects 32-bit NGINX Open Source when built with the ngx_http_mp4_module and the mp4 directive is used.