CVE-2026-9278

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-06-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

The Form Builder CP WordPress plugin before 1.2.47 does not properly sanitize a form configuration value before storing it and using it as part of a client-side script execution, allowing authenticated users with Editor-level access and above to perform Stored Cross-Site Scripting attacks against any visitor of a page rendering the affected form, even when the unfiltered_html capability is disallowed (e.g. in a multisite network).

CVSS v3
5.4
EG Score
5.4(high)
EPSS
5.5%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 15, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Form Builder CP < 1.2.47 – Editor+ Stored XSS via form_structure | CVE 2026-9278 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/b306b6f1-ca34-495f-a823-6e8f66e343d7/

Vendor Advisories for CVE-2026-9278(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 66× 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. 2026-07-07 00:30 UTCEG score recompute
  2. 2026-07-07 00:30 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-05 18:10 UTCEG score recompute
  5. 2026-07-05 18:10 UTCGHSA enrichment
  6. 2026-07-05 02:31 UTCEPSS rescore
  7. 2026-07-04 18:59 UTCEG score recompute
  8. 2026-07-04 18:59 UTCGHSA enrichment
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-03 19:40 UTCEG score recompute
  12. 2026-07-03 19:40 UTCGHSA enrichment
  13. 2026-07-02 20:29 UTCEG score recompute
  14. 2026-07-02 20:29 UTCGHSA enrichment
  15. 2026-07-01 21:17 UTCEG score recompute
  16. 2026-07-01 21:17 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-30 22:06 UTCEG score recompute
  20. 2026-06-30 22:05 UTCGHSA enrichment
  21. 2026-06-29 22:50 UTCEG score recompute
  22. 2026-06-29 22:50 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 23:39 UTCEG score recompute
  25. 2026-06-28 23:39 UTCGHSA enrichment
Show 41 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-28 00:28 UTCEG score recompute
  4. 2026-06-28 00:28 UTCGHSA enrichment
  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-27 01:04 UTCEG score recompute
  7. 2026-06-27 01:04 UTCGHSA enrichment
  8. 2026-06-26 01:54 UTCEG score recompute
  9. 2026-06-26 01:54 UTCGHSA enrichment
  10. 2026-06-25 13:50 UTCEPSS rescore
  11. 2026-06-25 02:42 UTCEG score recompute
  12. 2026-06-25 02:42 UTCGHSA enrichment
  13. 2026-06-24 14:05 UTCEPSS rescore
  14. 2026-06-24 03:28 UTCEG score recompute
  15. 2026-06-24 03:28 UTCGHSA enrichment
  16. 2026-06-23 21:33 UTCEPSS rescore
  17. 2026-06-23 04:14 UTCEG score recompute
  18. 2026-06-23 04:14 UTCGHSA enrichment
  19. 2026-06-22 14:25 UTCEPSS rescore
  20. 2026-06-22 04:58 UTCEG score recompute
  21. 2026-06-22 04:58 UTCGHSA enrichment
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 05:45 UTCEG score recompute
  24. 2026-06-21 05:45 UTCGHSA enrichment
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-20 06:32 UTCEG score recompute
  27. 2026-06-20 06:32 UTCGHSA enrichment
  28. 2026-06-19 19:26 UTCEPSS rescore
  29. 2026-06-19 07:20 UTCEG score recompute
  30. 2026-06-19 07:20 UTCGHSA enrichment
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-18 07:42 UTCEG score recompute▲ 5.40
  33. 2026-06-18 07:42 UTCGHSA enrichment
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-16 17:53 UTCEPSS rescore
  36. 2026-06-15 17:49 UTCEPSS rescore
  37. 2026-06-15 17:49 UTCEPSS rescore
  38. 2026-06-15 16:03 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  39. 2026-06-15 09:26 UTCNVD update
  40. 2026-06-15 07:53 UTCEG score recompute
  41. 2026-06-15 07:53 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-9278?
CVE-2026-9278 is a medium vulnerability published on June 15, 2026. The Form Builder CP WordPress plugin before 1.2.47 does not properly sanitize a form configuration value before storing it and using it as part of a client-side script execution, allowing authenticated users with Editor-level access and above to perform Stored Cross-Site Scripting attacks against…
When was CVE-2026-9278 disclosed?
CVE-2026-9278 was first published in the National Vulnerability Database on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9278 actively exploited?
CVE-2026-9278 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9278?
CVE-2026-9278 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-9278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9278, 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-2026-9278

Explore →

Is Your Infrastructure Affected by CVE-2026-9278?

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

Start Free Scan →Browse All CVEs