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CVE-2026-81678— AVideo SSRF Guard Bypass via IPv6 Transition Addresses

Quick assessment

Affected
WWBN AVideo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WWBN AVideo是WWBN组织开源的一个视频分享与内容管理平台。 WWBN AVideo 24.0之前版本存在服务端请求伪造漏洞，该漏洞源于isSSRFSafeURL函数未从NAT64、6to4和Teredo IPv6转换地址格式中提取嵌入式IPv4地址，可能导致未经身份验证的攻击者通过LiveLinks代理端点绕过SSRF保护，访问内部服务和云元数据端点。

CVSS 7.5 · High EPSS 0.45% · P38

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
WWBN AVideo < 24.0 affected
24.0 unaffected
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I. Basic Information for CVE-2026-81678

Vulnerability Information
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Vulnerability Title
AVideo SSRF Guard Bypass via IPv6 Transition Addresses
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
WWBN AVideo 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WWBN AVideo是WWBN组织开源的一个视频分享与内容管理平台。 WWBN AVideo 24.0之前版本存在服务端请求伪造漏洞，该漏洞源于isSSRFSafeURL函数未从NAT64、6to4和Teredo IPv6转换地址格式中提取嵌入式IPv4地址，可能导致未经身份验证的攻击者通过LiveLinks代理端点绕过SSRF保护，访问内部服务和云元数据端点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WWBN AVideo 0 ~ 24.0 -

II. Public POCs for CVE-2026-81678

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III. Intelligence Information for CVE-2026-81678

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Vendor Advisories for CVE-2026-81678 (2)

IV. Related Vulnerabilities

Same product: AVideo
Same vendor: WWBN
Same weakness: CWE-918

V. Comments for CVE-2026-81678

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