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Vulnerability Details :

CVE-2026-39366

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-07 Apr, 2026 | 19:21
Updated At-08 Apr, 2026 | 19:23
Rejected At-
Credits

WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via Missing Transaction Deduplication in ipn.php

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:07 Apr, 2026 | 19:21
Updated At:08 Apr, 2026 | 19:23
Rejected At:
▼CVE Numbering Authority (CNA)
WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via Missing Transaction Deduplication in ipn.php

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.

Affected Products
Vendor
WWBN
Product
AVideo
Versions
Affected
  • <= 26.0
Problem Types
TypeCWE IDDescription
CWECWE-345CWE-345: Insufficient Verification of Data Authenticity
Type: CWE
CWE ID: CWE-345
Description: CWE-345: Insufficient Verification of Data Authenticity
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
x_refsource_CONFIRM
https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1c
x_refsource_MISC
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1c
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
exploit
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:07 Apr, 2026 | 20:16
Updated At:22 Apr, 2026 | 18:51

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CPE Matches

wwbn
wwbn
>>avideo>>Versions up to 26.0(inclusive)
cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-345Secondarysecurity-advisories@github.com
CWE ID: CWE-345
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1csecurity-advisories@github.com
Patch
https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9psecurity-advisories@github.com
Third Party Advisory
https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory
Hyperlink: https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1c
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
Source: security-advisories@github.com
Resource:
Third Party Advisory
Hyperlink: https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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