What is CVE-2026-81678?

CVE-2026-81678 is a high-severity vulnerability in Wwbn Avideo, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-08-27.

How severe is CVE-2026-81678?

High severity. CVSS v3 base score is 7.5 out of 10.

SSRF in Wwbn Avideo

CVE-2026-81678

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-08-27 · last modified 2026-08-29.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (37.1th percentile), scored 2026-10-12.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Wwbn Avideo

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93 (vendor-advisory)
www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addre… (third-party-advisory)

Frequently asked questions

What is CVE-2026-81678?: CVE-2026-81678 is a high-severity vulnerability in Wwbn Avideo, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-08-27.
How severe is CVE-2026-81678?: High severity. CVSS v3 base score is 7.5 out of 10.