Vulnerability-Lookup

CVE-2026-73533 (GCVE-0-2026-73533)

Vulnerability from cvelistv5 – Published: 2026-08-13 16:00 – Updated: 2026-08-17 15:08 X_Known Exploited Vulnerability

KEVIntel

Title

Ninja Tables Pro 5.2.11 Embedded Malicious Code via Tampered Plugin Build

Summary

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.

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:07 UTC

CWE

CWE-506 - Embedded Malicious Code

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://wpmanageninja.com/security-incident-on-31…	technical-description
https://wordpress.org/plugins/ninja-tables/	product
https://www.vulncheck.com/advisories/ninja-tables…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
WPManageNinja	Ninja Tables Pro	Affected: 5.2.11 (semver) cpe:2.3:a:wpmanageninja:ninja_tables:5.2.11:::::wordpress::

Date Public

2026-08-01 00:00

KEVIntel

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: cbf5a559-f92a-4d19-98ee-1b39c8c9d418

Vulnerability ID: CVE-2026-73533

Status: Confirmed

Status Updated: 2026-08-14 17:13 UTC

Exploited: Yes

Timestamps

First Seen: 2026-08-14

Asserted: 2026-08-14

Scope

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details

Feed	KEVIntel (kevintel.com)
Title	Ninja Tables Pro 5.2.11 Embedded Malicious Code via Tampered Plugin Build
Vendor	WPManageNinja
Product	Ninja Tables Pro
Added Date	2026-08-14T17:13:03.486Z
Cvss Score	9.3
Epss Score	0.00448
Cvss Severity	CRITICAL
Epss Percentile	0.37123
Used In Malware	unknown
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-08-14 18:00 UTC | Updated: 2026-08-14 18:00 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-73533

Vulnerability from fkie_nvd - Published: 2026-08-13 16:19 - Updated: 2026-08-17 15:16

KEVIntel

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://wordpress.org/plugins/ninja-tables/
	disclosure@vulncheck.com	https://wpmanageninja.com/security-incident-on-31-july-2026/
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/ninja-tables-pro-embedded-malicious-code-via-tampered-plugin-build

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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}

GHSA-7WC4-82PM-HQCG

Vulnerability from github – Published: 2026-08-13 18:31 – Updated: 2026-08-13 18:31

Details

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-73533"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-506"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-13T16:19:05Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-7wc4-82pm-hqcg",
  "modified": "2026-08-13T18:31:38Z",
  "published": "2026-08-13T18:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73533"
    },
    {
      "type": "WEB",
      "url": "https://wordpress.org/plugins/ninja-tables"
    },
    {
      "type": "WEB",
      "url": "https://wpmanageninja.com/security-incident-on-31-july-2026"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/ninja-tables-pro-embedded-malicious-code-via-tampered-plugin-build"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-73533 (GCVE-0-2026-73533)

KEVIntel

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: kevintel

Details

References

FKIE_CVE-2026-73533

GHSA-7WC4-82PM-HQCG

Tags

Sightings

Nomenclature