High severity · published Aug 27, 2026
CVE-2026-81678
AVideo SSRF Guard Bypass via IPv6 Transition Addresses
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
before 24.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81678
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81678
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93
www.vulncheck.com
https://www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addresses
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