CVE-2026-81678 WWBN CVE debrief

Who should care

Security teams responsible for AVideo installations, particularly those exposed to the internet or untrusted networks, should review and apply patches. Additionally, security teams monitoring for SSRF attacks and those responsible for internal service security and cloud infrastructure should be aware of this vulnerability. Operators of AVideo and their security teams should assess the potential impact and prioritize patching accordingly.

Technical summary

The AVideo application before version 24.0 contains a server-side request forgery (SSRF) vulnerability in the isSSRFSafeURL function. This function fails to properly extract embedded IPv4 addresses from IPv6 transition address formats such as NAT64, 6to4, and Teredo. An unauthenticated attacker can exploit this vulnerability by using the LiveLinks proxy endpoint to bypass SSRF protections and reach internal services and cloud metadata endpoints. This is achieved by encoding private IPv4 targets in transition address formats.

Defensive priority

Medium-priority defensive review recommended due to potential for SSRF attacks

Recommended defensive actions

• Review and apply vendor patches for AVideo version 24.0 or later
• Implement additional SSRF protections for internal services and cloud metadata endpoints
• Monitor for suspicious activity related to the LiveLinks proxy endpoint
• Conduct a thorough review of AVideo installations for exposure and assign an owner for follow-up
• Verify compensating controls are in place for exposed systems while remediation is scheduled
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions and retest remediated assets before closing the item

Evidence notes

The CVE record was published on 2026-08-27T17:20:57.003Z and has not been modified since then. The NVD entry is currently Deferred. Evidence from official CVE and NVD sources indicates a server-side request forgery vulnerability exists in AVideo before version 24.0. The vulnerability is related to the isSSRFSafeURL function and involves IPv6 transition address formats. Security teams should verify the affected versions and configurations within their environments.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.