CVE-2026-39366— WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via Missing Transaction Deduplication in ipn.php
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I. Basic Information for CVE-2026-39366
Vulnerability Information
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Vulnerability Title
WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via Missing Transaction Deduplication in ipn.php
Source: NVD (National Vulnerability Database)
Vulnerability Description
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the PayPal IPN v1 handler at plugin/PayPalYPT/ipn.php lacks transaction deduplication, allowing an attacker to replay a single legitimate IPN notification to repeatedly inflate their wallet balance and renew subscriptions. The newer ipnV2.php and webhook.php handlers correctly deduplicate via PayPalYPT_log entries, but the v1 handler was never updated and remains actively referenced as the notify_url for billing plans.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数据真实性的验证不充分
Source: NVD (National Vulnerability Database)
Vulnerability Title
WWBN AVideo 数据伪造问题漏洞
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及之前版本存在数据伪造问题漏洞，该漏洞源于PayPal IPN v1处理程序缺少交易去重，可能导致攻击者重放通知以重复增加余额。
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
II. Public POCs for CVE-2026-39366
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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-2026-39370 | 7.1 HIGH | WWBN AVideo has an Allowlisted downloadURL media extensions bypass SSRF protection and en |
| 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
- CVE-2026-41304
WWBN AVideo vulnerable to RCE caused by clonesite plugin - CVE-2026-41064
AVideo has an incomplete fix for CVE-2026-33502 (Command Inj - CVE-2026-41063
WWBN AVideo has incomplete fix for CVE-2026-33500 (XSS) - CVE-2026-41062
WWBN/AVideo has an incomplete fix for a directory traversal - CVE-2026-41061
WWBN AVideo Vulnerable to stored XSS via Unanchored Duration
Same vendor: WWBN
- CVE-2026-41304
WWBN AVideo vulnerable to RCE caused by clonesite plugin - CVE-2026-41064
AVideo has an incomplete fix for CVE-2026-33502 (Command Inj - CVE-2026-41063
WWBN AVideo has incomplete fix for CVE-2026-33500 (XSS) - CVE-2026-41062
WWBN/AVideo has an incomplete fix for a directory traversal - CVE-2026-41061
WWBN AVideo Vulnerable to stored XSS via Unanchored Duration
Same weakness: CWE-345
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New API: Stripe Webhook Signature Bypass via Empty Secret En - CVE-2026-42206
Roadiz OpenID Connect nonce generated but never validated — - CVE-2026-31835
Vaultwarden WebAuthn credential metadata tampered before sig - CVE-2026-43534
OpenClaw < 2026.4.10 - Unsanitized External Input in Agent H
V. Comments for CVE-2026-39366
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