---
id: CVE-2026-81678
title: >-
  AVideo before 24.0 contains a server-side request forgery vulnerability in the
  isSSRFSafeURL function that fails to extract embedded IPv4 addresses from
  NAT64, 6to4, and Teredo IPv6 transition address formats
summary: >-
  AVideo before 24.0 contains a server-side request forgery vulnerability in the
  isSSRFSafeURL function that fails to extract embedded IPv4 addresses from
  NAT64, 6to4, and Teredo IPv6 transition address formats. Unauthenticated
  attackers c…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-918
published: '2026-08-27'
updated: '2026-08-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81678'
references:
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addresses
    label: disclosure@vulncheck.com
  - url: 'https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00448
epssPercentile: 0.36331
ingestedAt: '2026-08-29T21:42:35.281Z'
---

## Overview

AVideo before 24.0 contains a server-side request forgery vulnerability in the isSSRFSafeURL function that fails to extract embedded IPv4 addresses from NAT64, 6to4, and Teredo IPv6 transition address formats. Unauthenticated attackers can bypass SSRF protections via the LiveLinks proxy endpoint to reach internal services and cloud metadata endpoints by encoding private IPv4 targets in transition address formats.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.