CVE-2026-34733 Details
Description
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo installation script install/deleteSystemdPrivate.php contains a PHP operator precedence bug in its CLI-only access guard. The script is intended to run exclusively from the command line, but the guard condition !php_sapi_name() === 'cli' never evaluates to true due to how PHP resolves operator precedence. The ! (logical NOT) operator binds more tightly than === (strict comparison), causing the expression to always evaluate to false, which means the die() statement never executes. As a result, the script is accessible via HTTP without authentication and will delete files from the server's temp directory while also disclosing the temp directory contents in its response. At time of publication, there are no publicly available patches.
A vulnerability exists in WWBN AVideo versions through 26.0 in the installation script 'install/deleteSystemdPrivate.php'. The issue arises from a PHP operator precedence error in the command-line access guard, which is meant to restrict the script to CLI use only. However, the guard condition '!php_sapi_name() === 'cli'' fails to evaluate correctly, allowing the script to be accessed via HTTP without authentication. When exploited, the script deletes files from the server's temporary directory and discloses the contents of that directory in the response.
To address this vulnerability, the operator precedence issue in the access guard should be fixed by changing the condition to 'php_sapi_name() !== 'cli''.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/security/advisories/GHSA-wwpw-hrx8-79r5 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wwbn avideo | <= 26.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 1, 2026 | Initial Analysis | [email protected] |
| Mar 31, 2026 | New CVE Received | [email protected] |