WPManageNinja Ninja Tables Pro Plugin 5.2.11 NinjaTableDataSync.php backdoor

Summaryinfo

A vulnerability identified as problematic has been detected in WPManageNinja Ninja Tables Pro Plugin 5.2.11. This issue affects some unknown processing of the file app/Library/updater/NinjaTableDataSync.php. The manipulation leads to backdoor. This vulnerability is uniquely identified as CVE-2026-73533. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in WPManageNinja Ninja Tables Pro Plugin 5.2.11. This issue affects some unknown functionality of the file app/Library/updater/NinjaTableDataSync.php. The manipulation with an unknown input leads to a backdoor vulnerability. Using CWE to declare the problem leads to CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Ninja Tables Pro 5.2.11 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP file (app/Library/updater/NinjaTableDataSync.php) that established a backdoor REST API endpoint, dropped persistent PHP files in mu-plugins and uploads directories, installed a passwordless administrator account, and registered scheduled tasks that survived plugin removal.

The advisory is shared at wpmanageninja.com. The identification of this vulnerability is CVE-2026-73533 since 08/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/13/2026). MITRE ATT&CK project uses the attack technique T1588.001 for this issue.

By approaching the search of inurl:app/Library/updater/NinjaTableDataSync.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• WPManageNinja

Name

• Ninja Tables Pro Plugin

Version

• 5.2.11

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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