CVE-2026-81678CWE-918ssrf

CVE-2026-81678

High · published August 27, 2026

CVSS v3.1

7.5

EPSS

Percentile

38.0

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 7.5 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0: 6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
EPSS: 0.00448 · 38.0th percentile
Weakness: CWE-918 · Server-Side Request Forgery (SSRF)
Published: 2026-08-27T21:20Z

References (3)

https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93 · [email protected]https://www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addresses · [email protected]https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

27 AUG 14:50Z
AVideo SSRF Guard Bypass via IPv6 Transition Addresses
cvelistv5