CVE-2026-43878 Details
Description
WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/Meet/iframe.php echoes the attacker-controlled user and pass query parameters unescaped into a JavaScript double-quoted string literal inside a <script> block. An attacker who sends a victim to a crafted URL can break out of the string and execute arbitrary JavaScript in the victim's browser in the context of the AVideo origin. No authentication is required if a public Meet schedule exists on the target. Commit 3298ced2bcf92e4f3acff6ce9bde14edf42ecb5b contains an updated fix.
A reflected cross-site scripting vulnerability has been identified in WWBN AVideo versions through 29.0. The issue resides in the Meet plugin, specifically within 'iframe.php', where user-controlled 'user' and 'pass' query parameters are echoed unescaped into a JavaScript string literal inside a <script> block. This flaw allows an attacker to execute arbitrary JavaScript in the context of the AVideo origin by crafting a malicious URL. The vulnerability is accessible without authentication if a public Meet schedule is available on the target.
Users are advised to update to the patched version available in the commit '3298ced2bcf92e4f3acff6ce9bde14edf42ecb5b', which includes the necessary fix.
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 May 11, 2026CISA-ADP
Assessed May 12, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/security/advisories/GHSA-mm5f-8q57-4fc4 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/WWBN/AVideo/commit/3298ced2bcf92e4f3acff6ce9bde14edf42ecb5b | [email protected] | Source CodeVendor |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-mm5f-8q57-4fc4 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| WWBN AVideo | <= 29.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | New CVE Received | [email protected] |