CVE-2026-123486

WWBN AVideo 29.0 through 29.4.0 Race Condition in PayPal IPN Deduplication via ipn.php

6.0 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.17%Scored on 2026-11-07. The trend appears after a second daily score.

What each source reports

CVE List Score used 6.0

WWBN AVideo 29.0 through 29.4.0 Race Condition in PayPal IPN Deduplication via ipn.php

Record: CVE-2026-123486
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-367
Updated: 2026-11-06

EUVDEUVD-2026-118286 6.0

Record: EUVD-2026-118286
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-06

GitHub AdvisoriesGHSA-8pjw-rf82-7c57 6.0

WWBN AVideo 29.0 through 29.4.0 contains a race condition vulnerability in plugin/PayPalYPT/ipn...

Record: GHSA-8pjw-rf82-7c57
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-367
Updated: 2026-11-06

NVD 6.0

Record: CVE-2026-123486
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-367
Updated: 2026-11-06

OSV 6.0

WWBN AVideo 29.0 through 29.4.0 Race Condition in PayPal IPN Deduplication via ipn.php

Record: CVE-2026-123486
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-367
Updated: 2026-11-07

Affected products

wwbn avideo

History

History
Recorded	Changed	Sources
Nov 7, 2026	aliases, references	OSV
Nov 6, 2026	published	EUVD, NVD
Nov 6, 2026	published	EUVD
Nov 6, 2026	references, severity, title	CVE List
Nov 6, 2026	aliases, products, published, references	EUVD
Nov 6, 2026	first indexed	GitHub Advisories

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-123486 is a medium vulnerability (CVSS 6.0) in Wwbn Avideo, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.