CVE-2026-88871 Details
Description
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 (master, 2026-08-23) contains a cross-site request forgery vulnerability in the CustomizeUser plugin's plugin/CustomizeUser/setSubscribers.json.php endpoint. The script reads users_id and ExtraSubscribers from $_REQUEST and calls User::setExtraSubscribers() without requiring a POST request or a valid CSRF token; autoCSRFGuard() is applied only to POST requests to *.json.php, and the mutation does not pass through ObjectYPT::save()/isUntrustedRequest(), so a cross-origin GET succeeds. An unauthenticated remote attacker who induces a logged-in administrator to load a crafted page (for example an <img> tag pointing at the endpoint) can forge the ExtraSubscribers count displayed on any user's channel. The CustomizeUser plugin is enabled by default, and no patched version was available at the time of reporting.
A cross-site request forgery (CSRF) vulnerability has been identified in the WWBN AVideo platform, specifically within the CustomizeUser plugin. This issue is present in versions of AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 on the master branch, dated August 23, 2026. The vulnerability arises in the plugin's setSubscribers.json.php endpoint, which allows an administrator to modify subscriber counts without requiring a valid CSRF token or a POST request. The endpoint reads user IDs and subscriber data from the request and directly calls a function to update subscriber counts. This lack of proper request validation enables an unauthenticated remote attacker to manipulate subscriber counts displayed on user channels by tricking a logged-in administrator into loading a crafted page, such as one containing an image tag that targets the vulnerable endpoint.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 10, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/security/advisories/GHSA-p9c3-prq7-g8xc | CISA-ADP | AdvisoryExploitVendor |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-p9c3-prq7-g8xc | [email protected] | AdvisoryExploitVendor |
| https://www.vulncheck.com/advisories/wwbn-avideo-customizeuser-setsubscribers-csrf-via-get | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-352 | Cross-Site Request Forgery (CSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| WWBN AVideo | <= c3edcc274c389816d434acadac07ee78eaf330c1 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 10, 2026 | New CVE Received | [email protected] |