VDB-431941 · CVE-2026-123486 · GCVE-0-2026-123486

WWBN AVideo up to 29.4.0 PayPalYPT Plugin plugin/PayPalYPT/ipn.php isRecurringPaymentIdUsed race condition

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7	$0-$5k	0.39

Summaryinfo

A vulnerability classified as problematic has been found in WWBN AVideo up to 29.4.0. This issue affects the function isRecurringPaymentIdUsed of the file plugin/PayPalYPT/ipn.php of the component PayPalYPT Plugin. This manipulation causes race condition. This vulnerability is handled as CVE-2026-123486. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in WWBN AVideo up to 29.4.0 and classified as problematic. Affected by this vulnerability is the function isRecurringPaymentIdUsed of the file plugin/PayPalYPT/ipn.php of the component PayPalYPT Plugin. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. As an impact it is known to affect integrity. The summary by CVE is:

WWBN AVideo 29.0 through 29.4.0 contains a race condition vulnerability in plugin/PayPalYPT/ipn.php that allows attackers to bypass IPN replay protection due to a non-atomic deduplication check and insert. Attackers can concurrently replay a captured valid recurring-payment notification so both requests pass isRecurringPaymentIdUsed(), obtaining duplicate wallet credits and subscription renewals.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-123486 since 11/06/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available.

By approaching the search of inurl:plugin/PayPalYPT/ipn.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

WWBN

Name

AVideo

Version

License

open-source

Website

Product: https://github.com/WWBN/AVideo/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (VulnCheck): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/06/2026 Advisory disclosed
11/06/2026 +0 days CVE reserved
11/06/2026 +0 days VulDB entry created
11/06/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined

CNA: VulnCheck
CVE: CVE-2026-123486 (🔒)

GCVE (CVE): GCVE-0-2026-123486
GCVE (VulDB): GCVE-100-431941

Entryinfo

Created: 11/06/2026 16:28
Changes: 11/06/2026 16:28 (76)
Complete: 🔍
Cache ID: 216::103