# CVE-2026-73533

## Summary

- **CVE ID:** CVE-2026-73533
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-506
- **Published:** Aug 13, 2026
- **Last Modified:** Aug 17, 2026

## Description

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.

## Affected Products

- WPManageNinja — Ninja Tables Pro (5.2.11)

## References

- [CNA](https://wpmanageninja.com/security-incident-on-31-july-2026/)
- [CNA](https://wordpress.org/plugins/ninja-tables/)
- [CNA](https://www.vulncheck.com/advisories/ninja-tables-pro-embedded-malicious-code-via-tampered-plugin-build)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 37.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._