Bug 2449598 (CVE-2026-32647)

Summary: CVE-2026-32647 nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: caswilli, kaycoth, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in NGINX's ngx_http_mp4_module. This Out-of-Bounds Read/Write vulnerability occurs due to improper handling of specially crafted MP4 files. A local authenticated attacker, by supplying a malicious MP4 file, can trigger a buffer over-read or overwrite in worker memory. This can lead to process termination, potentially causing a denial-of-service or, under certain conditions, achieving code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2452220    
Bug Blocks:    
Deadline: 2026-03-24   

Description OSIDB Bzimport 2026-03-20 11:58:10 UTC 
Out-of-Bounds Read/Write vulnerability in the ngx_http_mp4_module of NGINX Open Source and NGINX Plus. The flaw is caused by improper handling of specially crafted MP4 files during processing. When such a file is parsed, it can trigger a buffer over-read or overwrite in worker memory, leading to process termination or undefined behavior. This vulnerability can be exploited by a local authenticated attacker capable of supplying a malicious MP4 file, potentially causing denial-of-service or achieving code execution under certain conditions.