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CVE-2026-39370— WWBN AVideo has an Allowlisted downloadURL media extensions bypass SSRF protection and enable internal response exfiltration (Incomplete fix for CVE-2026-27732)

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团队的一个由PHP编写的视频平台建站系统。 WWBN AVideo 26.0及之前版本存在代码问题漏洞，该漏洞源于对downloadURL值的服务端请求伪造验证不完整，可能导致经过身份验证的上传者进行服务端请求伪造。

CVSS 7.1 · High EPSS 0.34% · P25
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I. Basic Information for CVE-2026-39370

Vulnerability Information
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Vulnerability Title
WWBN AVideo has an Allowlisted downloadURL media extensions bypass SSRF protection and enable internal response exfiltration (Incomplete fix for CVE-2026-27732)
Source: CVE Program / CVE List V5
Vulnerability Description
WWBN AVideo is an open source video platform. In versions 26.0 and prior, objects/aVideoEncoder.json.php still allows attacker-controlled downloadURL values with common media or archive extensions such as .mp4, .mp3, .zip, .jpg, .png, .gif, and .webm to bypass SSRF validation. The server then fetches the response and stores it as media content. This allows an authenticated uploader to turn the upload-by-URL flow into a reliable SSRF response-exfiltration primitive. The vulnerability is caused by an incomplete fix for CVE-2026-27732.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/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 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WWBN AVideo是WWBN团队的一个由PHP编写的视频平台建站系统。 WWBN AVideo 26.0及之前版本存在代码问题漏洞，该漏洞源于对downloadURL值的服务端请求伪造验证不完整，可能导致经过身份验证的上传者进行服务端请求伪造。
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 <= 26.0 -

II. Public POCs for CVE-2026-39370

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III. Intelligence Information for CVE-2026-39370

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Same Patch Batch · WWBN · 2026-04-07 · 5 CVEs total

CVE-2026-39369 7.6 HIGH WWBN AVideo's GIF poster fetch bypasses traversal scrubbing and exposes local files throug
CVE-2026-39366 6.5 MEDIUM WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via M
CVE-2026-39368 6.5 MEDIUM WWBN AVideo has a Live restream log callback flow enabling stored SSRF to internal service
CVE-2026-39367 5.4 MEDIUM WWBN AVideo has Stored XSS via Malicious EPG XML Program Titles in AVideo EPG Page

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-39370

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