CVE-2026-16539

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

The sm page duplicator WordPress plugin through 1.0.0 does not sanitise and escape a stored value before using it in a SQL statement when duplicating a page, allowing users with the Editor role and above to perform SQL Injection attacks.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (1)

Auto-updated Aug 3, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

SM Page Duplicator <= 1.0.0 – Editor+ SQL Injection via Page Duplication | CVE 2026-16539 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/8e2c97d8-5392-4464-94e5-3fc353302f1f/

Vendor Advisories for CVE-2026-16539(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 27× in last 7d / 74× 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 04:23 UTCEG score recompute
  2. 2026-08-21 04:23 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 15:19 UTCGHSA enrichment
  5. 2026-08-20 02:16 UTCEG score recompute
  6. 2026-08-20 02:16 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 13:13 UTCGHSA enrichment
  9. 2026-08-19 00:10 UTCEG score recompute
  10. 2026-08-19 00:10 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 11:05 UTCGHSA enrichment
  13. 2026-08-17 21:59 UTCEG score recompute
  14. 2026-08-17 21:59 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 08:55 UTCGHSA enrichment
  17. 2026-08-16 19:52 UTCEG score recompute
  18. 2026-08-16 19:52 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 06:48 UTCEG score recompute
  21. 2026-08-16 06:48 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 17:46 UTCGHSA enrichment
  24. 2026-08-15 04:43 UTCEG score recompute
  25. 2026-08-15 04:43 UTCGHSA enrichment
Show 49 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 15:39 UTCGHSA enrichment
  3. 2026-08-14 02:36 UTCEG score recompute
  4. 2026-08-14 02:36 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 13:33 UTCGHSA enrichment
  7. 2026-08-13 00:30 UTCEG score recompute
  8. 2026-08-13 00:30 UTCGHSA enrichment
  9. 2026-08-12 13:50 UTCEPSS rescore
  10. 2026-08-12 11:27 UTCGHSA enrichment
  11. 2026-08-11 22:23 UTCEG score recompute
  12. 2026-08-11 22:23 UTCGHSA enrichment
  13. 2026-08-11 13:42 UTCEPSS rescore
  14. 2026-08-11 09:20 UTCEG score recompute
  15. 2026-08-11 09:20 UTCGHSA enrichment
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 20:17 UTCGHSA enrichment
  18. 2026-08-10 07:13 UTCGHSA enrichment
  19. 2026-08-09 18:11 UTCEG score recompute
  20. 2026-08-09 18:11 UTCGHSA enrichment
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 05:08 UTCEG score recompute
  23. 2026-08-09 05:08 UTCGHSA enrichment
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 16:05 UTCGHSA enrichment
  26. 2026-08-08 03:01 UTCEG score recompute
  27. 2026-08-08 03:01 UTCGHSA enrichment
  28. 2026-08-07 13:58 UTCGHSA enrichment
  29. 2026-08-07 00:56 UTCEG score recompute
  30. 2026-08-07 00:55 UTCGHSA enrichment
  31. 2026-08-06 13:46 UTCEPSS rescore
  32. 2026-08-06 11:52 UTCGHSA enrichment
  33. 2026-08-05 22:49 UTCEG score recompute
  34. 2026-08-05 22:49 UTCGHSA enrichment
  35. 2026-08-05 19:17 UTCEPSS rescore
  36. 2026-08-05 09:46 UTCGHSA enrichment
  37. 2026-08-04 20:40 UTCEG score recompute
  38. 2026-08-04 20:39 UTCGHSA enrichment
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-04 10:38 UTCEPSS rescore
  41. 2026-08-04 07:24 UTCEG score recompute
  42. 2026-08-04 07:24 UTCGHSA enrichment
  43. 2026-08-03 18:17 UTCGHSA enrichment
  44. 2026-08-03 17:55 UTCEG score recompute▲ 8.10
  45. 2026-08-03 17:54 UTCGHSA enrichment
  46. 2026-08-03 17:53 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  47. 2026-08-03 07:22 UTCNVD update
  48. 2026-08-03 06:34 UTCEG score recompute
  49. 2026-08-03 06:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16539?
CVE-2026-16539 is a high vulnerability published on August 3, 2026. The sm page duplicator WordPress plugin through 1.0.0 does not sanitise and escape a stored value before using it in a SQL statement when duplicating a page, allowing users with the Editor role and above to perform SQL Injection attacks.
When was CVE-2026-16539 disclosed?
CVE-2026-16539 was first published in the National Vulnerability Database on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16539 actively exploited?
CVE-2026-16539 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 87.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16539?
CVE-2026-16539 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16539, 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

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