High [CVE-2026-27784] NGINX ngx_http_mp4_module vulnerability
This high-severity F5 advisory covers CVE-2026-27784 affecting NGINX Open Source.
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Summary
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.
- NGINX Open Source 1.29.0 before 1.29.7
- NGINX Open Source 1.1.19 before 1.28.3
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
- 1.29.7
- 1.28.3
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Mitigation
Upgrade to a fixed release: 1.29.7, 1.28.3. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
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