CVE-2026-19840

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

The Notiqoo WordPress plugin before 1.4.14 does not have capability checks on several of its AJAX actions and builds the name of the option to write from user input, allowing users with a role as low as contributor to modify arbitrary WordPress options, which can be used to deactivate Notiqoo WordPress plugin before 1.4.14 and to lock every administrator out of the site.

CVSS v3
6.5
EG Score
6.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 10, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Notiqoo < 1.4.14 – Contributor+ Arbitrary Option Update via Multiple AJAX Actions | CVE 2026-19840 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/030939ee-9aa9-4082-934e-c9a07fc3dfc3/

Vendor Advisories for CVE-2026-19840(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 18× in last 7d / 63× 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. 2026-10-03 22:06 UTCEG score recompute
  2. 2026-10-03 22:06 UTCGHSA enrichment
  3. 2026-10-02 20:50 UTCEG score recompute
  4. 2026-10-02 20:50 UTCGHSA enrichment
  5. 2026-10-01 19:49 UTCEPSS rescore
  6. 2026-10-01 19:11 UTCGHSA enrichment
  7. 2026-09-30 17:19 UTCEG score recompute
  8. 2026-09-30 17:19 UTCGHSA enrichment
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-29 15:20 UTCEPSS rescore
  11. 2026-09-29 14:41 UTCEG score recompute
  12. 2026-09-29 14:41 UTCGHSA enrichment
  13. 2026-09-28 13:51 UTCEPSS rescore
  14. 2026-09-28 13:23 UTCEG score recompute
  15. 2026-09-28 13:23 UTCGHSA enrichment
  16. 2026-09-27 13:47 UTCEPSS rescore
  17. 2026-09-27 12:07 UTCEG score recompute
  18. 2026-09-27 12:07 UTCGHSA enrichment
  19. 2026-09-26 15:58 UTCEPSS rescore
  20. 2026-09-26 10:49 UTCEG score recompute
  21. 2026-09-26 10:49 UTCGHSA enrichment
  22. 2026-09-25 09:06 UTCEG score recompute
  23. 2026-09-25 09:06 UTCGHSA enrichment
  24. 2026-09-24 07:50 UTCEG score recompute
  25. 2026-09-24 07:50 UTCGHSA enrichment
Show 38 more
  1. 2026-09-23 06:35 UTCEG score recompute
  2. 2026-09-23 06:35 UTCGHSA enrichment
  3. 2026-09-22 05:19 UTCEG score recompute
  4. 2026-09-22 05:19 UTCGHSA enrichment
  5. 2026-09-21 04:03 UTCEG score recompute
  6. 2026-09-21 04:03 UTCGHSA enrichment
  7. 2026-09-20 02:48 UTCEG score recompute
  8. 2026-09-20 02:47 UTCGHSA enrichment
  9. 2026-09-19 01:31 UTCEG score recompute
  10. 2026-09-19 01:31 UTCGHSA enrichment
  11. 2026-09-18 19:27 UTCEPSS rescore
  12. 2026-09-18 00:16 UTCEG score recompute
  13. 2026-09-18 00:16 UTCGHSA enrichment
  14. 2026-09-16 23:00 UTCEG score recompute
  15. 2026-09-16 23:00 UTCGHSA enrichment
  16. 2026-09-16 14:07 UTCEPSS rescore
  17. 2026-09-16 05:14 UTCEPSS rescore
  18. 2026-09-15 21:44 UTCEG score recompute
  19. 2026-09-15 21:44 UTCGHSA enrichment
  20. 2026-09-14 20:28 UTCGHSA enrichment
  21. 2026-09-13 19:07 UTCEG score recompute
  22. 2026-09-13 19:07 UTCGHSA enrichment
  23. 2026-09-13 16:46 UTCEPSS rescore
  24. 2026-09-12 17:51 UTCEG score recompute
  25. 2026-09-12 17:51 UTCGHSA enrichment
  26. 2026-09-12 15:00 UTCEPSS rescore
  27. 2026-09-11 16:35 UTCEG score recompute
  28. 2026-09-11 16:35 UTCGHSA enrichment
  29. 2026-09-11 14:52 UTCEPSS rescore
  30. 2026-09-11 09:36 UTCEPSS rescore
  31. 2026-09-10 15:19 UTCGHSA enrichment
  32. 2026-09-10 14:20 UTCGHSA enrichment
  33. 2026-09-10 13:21 UTCEG score recompute▲ 6.50
  34. 2026-09-10 13:21 UTCGHSA enrichment
  35. 2026-09-10 13:20 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  36. 2026-09-10 07:35 UTCNVD update
  37. 2026-09-10 06:30 UTCEG score recompute
  38. 2026-09-10 06:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19840?
CVE-2026-19840 is a medium vulnerability published on September 10, 2026. The Notiqoo WordPress plugin before 1.4.14 does not have capability checks on several of its AJAX actions and builds the name of the option to write from user input, allowing users with a role as low as contributor to modify arbitrary WordPress options, which can be used to deactivate Notiqoo…
When was CVE-2026-19840 disclosed?
CVE-2026-19840 was first published on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19840 actively exploited?
CVE-2026-19840 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19840?
CVE-2026-19840 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19840?
No fix for CVE-2026-19840 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19840 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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