CVE-2026-73533

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

Ninja Tables Pro 5.2.11 Embedded Malicious Code via Tampered Plugin Build | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ninja-tables-pro-embedded-malicious-code-via-tampered-plugin-build
generic

WPManageNinja Security Incident: July 31, 2026

https://wpmanageninja.com/security-incident-on-31-july-2026/
generic

Ninja Tables – Easy Data Table Builder – WordPress plugin | WordPress.org

https://wordpress.org/plugins/ninja-tables/

Vendor Advisories for CVE-2026-73533(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 58× in last 7d / 64× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 01:31 UTCEG score recompute
  2. 2026-08-21 01:31 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 21:12 UTCGHSA enrichment
  5. 2026-08-20 16:53 UTCGHSA enrichment
  6. 2026-08-20 12:35 UTCGHSA enrichment
  7. 2026-08-20 08:16 UTCGHSA enrichment
  8. 2026-08-20 03:57 UTCGHSA enrichment
  9. 2026-08-19 23:37 UTCGHSA enrichment
  10. 2026-08-19 19:18 UTCEG score recompute
  11. 2026-08-19 19:18 UTCGHSA enrichment
  12. 2026-08-19 17:04 UTCEPSS rescore
  13. 2026-08-19 14:59 UTCGHSA enrichment
  14. 2026-08-19 10:41 UTCGHSA enrichment
  15. 2026-08-19 06:21 UTCGHSA enrichment
  16. 2026-08-19 02:00 UTCGHSA enrichment
  17. 2026-08-18 21:39 UTCGHSA enrichment
  18. 2026-08-18 17:20 UTCEG score recompute
  19. 2026-08-18 17:20 UTCGHSA enrichment
  20. 2026-08-18 13:49 UTCEPSS rescore
  21. 2026-08-18 13:49 UTCEPSS rescore
  22. 2026-08-18 13:00 UTCGHSA enrichment
  23. 2026-08-18 08:39 UTCGHSA enrichment
  24. 2026-08-18 04:18 UTCGHSA enrichment
  25. 2026-08-17 23:59 UTCGHSA enrichment
Show 39 more
  1. 2026-08-17 19:40 UTCGHSA enrichment
  2. 2026-08-17 15:21 UTCEG score recompute
  3. 2026-08-17 15:21 UTCGHSA enrichment
  4. 2026-08-17 14:52 UTCEG score recompute
  5. 2026-08-17 14:52 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 10:34 UTCGHSA enrichment
  8. 2026-08-17 06:15 UTCGHSA enrichment
  9. 2026-08-17 01:57 UTCGHSA enrichment
  10. 2026-08-16 21:38 UTCGHSA enrichment
  11. 2026-08-16 17:19 UTCEG score recompute
  12. 2026-08-16 17:19 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 13:00 UTCGHSA enrichment
  16. 2026-08-16 08:41 UTCGHSA enrichment
  17. 2026-08-16 04:22 UTCEG score recompute
  18. 2026-08-16 04:22 UTCGHSA enrichment
  19. 2026-08-16 02:15 UTCEPSS rescore
  20. 2026-08-16 00:04 UTCGHSA enrichment
  21. 2026-08-15 19:45 UTCGHSA enrichment
  22. 2026-08-15 15:26 UTCGHSA enrichment
  23. 2026-08-15 11:07 UTCGHSA enrichment
  24. 2026-08-15 06:48 UTCGHSA enrichment
  25. 2026-08-15 01:44 UTCEG score recompute
  26. 2026-08-15 01:44 UTCGHSA enrichment
  27. 2026-08-15 01:31 UTCEPSS rescore
  28. 2026-08-14 21:26 UTCGHSA enrichment
  29. 2026-08-14 17:07 UTCEG score recompute
  30. 2026-08-14 17:07 UTCGHSA enrichment
  31. 2026-08-14 13:59 UTCGHSA enrichment
  32. 2026-08-14 09:40 UTCGHSA enrichment
  33. 2026-08-14 05:22 UTCGHSA enrichment
  34. 2026-08-14 01:03 UTCGHSA enrichment
  35. 2026-08-13 20:44 UTCEG score recompute
  36. 2026-08-13 20:44 UTCGHSA enrichment
  37. 2026-08-13 16:25 UTCEG score recompute
  38. 2026-08-13 16:17 UTCEG score recompute
  39. 2026-08-13 16:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73533?
CVE-2026-73533 is a critical vulnerability published on August 13, 2026. 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,…
When was CVE-2026-73533 disclosed?
CVE-2026-73533 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73533 actively exploited?
CVE-2026-73533 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.5% of all scored CVEs.
What is the CVSS score of CVE-2026-73533?
CVE-2026-73533 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-73533?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73533, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-73533

Explore →

Is Your Infrastructure Affected by CVE-2026-73533?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs