---
id: "CVE-2026-65982"
page: "https://infrastack.ai/live/CVE-2026-65982"
kind: "vulnerability"
aliases: ["CVE-2026-65982"]
title: "nginx-http-flv-module: missing Host header causes a NULL-pointer crash"
severity: "high"
cvss: 8.7
epss: null
exploited: false
status: "open"
category: "runtime"
products: [{"name": "nginx-http-flv-module", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["media-streaming", "nginx", "runtime", "self-hosted"]
not_affected_if: ["module-not-installed", "patched-version"]
published_at: "2026-11-11T21:16:46+00:00"
first_seen_at: "2026-11-11T21:29:09+00:00"
updated_at: "2026-11-11T21:30:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65982", "first_seen_at": "2026-11-11T21:29:09+00:00"}]
exploit_sources: []
---

# nginx-http-flv-module: missing Host header causes a NULL-pointer crash

Link for people: https://infrastack.ai/live/CVE-2026-65982 (this .md is for agents)

nginx-http-flv-module, a media streaming module for nginx, dereferences a NULL pointer when an HTTP/1.0 request arrives without a Host header. The crash can take down the nginx worker process, and the advisory's CVSS score is 8.7.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:nginx-http-flv-module affected range not listed fixed no fixed version listed

## How to check

- Check the installed module version in the nginx build or package manager, e.g. `nginx -V` to see whether the flv module is compiled in.
- Look for the module in the nginx configuration with `grep -r flv /etc/nginx`.

## Fix

- nginx-http-flv-module: upgrade to `1.2.14` or later.

## Timeline

- 2026-11-11T21:29:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-65982

## Documents

- [advisory] Vendor advisory: github.com https://github.com/winshining/nginx-http-flv-module/security/advisories/GHSA-8mc6-jrxv-29g9

## From the sources

nginx-http-flv-module is a media streaming server based on nginx-rtmp-module. Prior to version 1.2.14, if a server received an HTTP/1.0 request without a header Host, which was permitted by HTTP core of Nginx, then r->headers_in.host was NULL, nginx-http-flv-module used r->headers_in.host->value to make a pseudo tcUrl, so NULL-pointer dereference happened. This issue has been patched in version 1.2.14.

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