CVE-2026-81678

HIGH 7.5

AVideo SSRF Guard Bypass via IPv6 Transition Addresses

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	wwbn
Product	avideo
Published	Aug 27, 2026

Stay Ahead of the Next One

Get instant alerts for wwbn avideo

Be the first to know when new high vulnerabilities affecting wwbn avideo are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

WWBN / AVideo

0 < 24.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93 vulncheck.com: https://www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addresses