CVE-2026-81678

AVideo SSRF Guard Bypass via IPv6 Transition Addresses

HIGH
7.5
CVSS Score
Published: August 27, 2026 at 02:50 PM UTC
Updated: August 29, 2026 at 12:16 PM UTC
1 product affected across 1 vendorAVideo

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 24.0
Vendor states this is fixed in 24.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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