CVE-2026-27784— NGINX ngx_http_mp4_module vulnerability
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I. Basic Information for CVE-2026-27784
Vulnerability Information
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Vulnerability Title
NGINX ngx_http_mp4_module vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
F5 NGINX Open Source 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 NGINX Open Source是美国F5公司的一个高性能Web服务器、反向代理服务器、负载均衡器和API网关。 F5 NGINX Open Source 32位版本存在输入验证错误漏洞，该漏洞源于ngx_http_mp4_module模块存在越界读取或写入问题，可能导致使用特制MP4文件时终止工作进程。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| F5 | NGINX Open Source | 1.29.0 ~ 1.29.7 | - |
II. Public POCs for CVE-2026-27784
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://my.f5.com/manage/s/article/K000160364vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-27784
Same Patch Batch · F5 · 2026-03-24 · 6 CVEs total
| CVE-2026-27654 | 8.2 HIGH | NGINX ngx_http_dav_module vulnerability |
| CVE-2026-32647 | 7.8 HIGH | NGINX ngx_http_mp4_module vulnerability |
| CVE-2026-27651 | 7.5 HIGH | NGINX ngx_mail_auth_http_module vulnerability |
| CVE-2026-28755 | 5.4 MEDIUM | NGINX ngx_stream_ssl_module vulnerability |
| CVE-2026-28753 | 3.7 LOW | NGINX ngx_mail_proxy_module vulnerability |
IV. Related Vulnerabilities
Same product: NGINX Open Source
Same weakness: CWE-190
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Signed integer overflow in metaphone() - CVE-2026-42311
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Pillow: Integer overflow when processing fonts - CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsi - CVE-2026-42199
Grid: Integer Overflow in Grid::expand_rows Leads to Safe-AP
V. Comments for CVE-2026-27784
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