# CVE-2026-65982: NULL-pointer dereference (DoS) in nginx-http-flv-module

Status: published. Published: 2026-11-11. Updated: 2026-11-12.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- winshining / nginx-http-flv-module: < 1.2.14 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.38% as of 2026-11-12; percentile 32.16%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-476

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/winshining/nginx-http-flv-module/security/advisories/GHSA-8mc6-jrxv-29g9 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://www.chtsecurity.com/news/b15d7b24-0a5e-4962-8b52-e4754e5af4f8?lang=en (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/winshining/nginx-http-flv-module/security/advisories/GHSA-8mc6-jrxv-29g9 (security-advisories@github.com)

- https://www.chtsecurity.com/news/b15d7b24-0a5e-4962-8b52-e4754e5af4f8?lang=en (security-advisories@github.com)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-65982; retrieved 2026-11-12; source updated 2026-11-12

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65982; retrieved 2026-11-12; source updated 2026-11-11

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-65982; retrieved 2026-11-12; source updated Not reported

Revision: 978564e2f701a4a1e6112964f56c7260019ff311408a338da00cd6610e442365

Canonical: https://y2.dev/cve/CVE-2026-65982

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