CVE-2026-6400

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

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

The Child Height Predictor by Ostheimer plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.3. This is due to missing nonce verification in the options() function, which handles plugin settings updates. The form template does not include a wp_nonce_field() call, and the handler never calls check_admin_referer() or wp_verify_nonce(). This makes it possible for unauthenticated attackers to trick a site administrator into clicking a link or visiting a malicious page that submits a forged POST request, causing unauthorized changes to the plugin settings such as unit preferences to be persisted to the database via update_option().

CVSS v3
4.3
EG Score
4.3(medium)
EPSS
5.9%
KEV
Not listed

Published

May 20, 2026

Last Modified

May 20, 2026

References (5)

Vendor Advisories for CVE-2026-6400(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 9× in last 7d / 53× 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.

Showing the most recent 100 of 119 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-13 22:31 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-08 15:16 UTCEPSS rescore
  11. 2026-07-08 15:16 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 02:31 UTCEPSS rescore
  17. 2026-07-05 02:30 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-29 20:33 UTCEG score recompute
  23. 2026-06-29 20:33 UTCGHSA enrichment
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-27 20:19 UTCEG score recompute
  3. 2026-06-27 20:19 UTCGHSA enrichment
  4. 2026-06-27 03:08 UTCEPSS rescore
  5. 2026-06-26 19:40 UTCEG score recompute
  6. 2026-06-26 19:40 UTCGHSA enrichment
  7. 2026-06-25 16:24 UTCEG score recompute
  8. 2026-06-25 16:24 UTCGHSA enrichment
  9. 2026-06-25 13:50 UTCEPSS rescore
  10. 2026-06-24 14:05 UTCEPSS rescore
  11. 2026-06-23 21:33 UTCEPSS rescore
  12. 2026-06-23 21:33 UTCEPSS rescore
  13. 2026-06-22 14:25 UTCEPSS rescore
  14. 2026-06-22 14:25 UTCEPSS rescore
  15. 2026-06-21 14:56 UTCEPSS rescore
  16. 2026-06-21 14:56 UTCEPSS rescore
  17. 2026-06-21 01:59 UTCEPSS rescore
  18. 2026-06-21 01:59 UTCEPSS rescore
  19. 2026-06-19 19:26 UTCEPSS rescore
  20. 2026-06-19 19:26 UTCEPSS rescore
  21. 2026-06-18 17:52 UTCEPSS rescore
  22. 2026-06-18 17:52 UTCEPSS rescore
  23. 2026-06-17 20:05 UTCEG score recompute
  24. 2026-06-17 20:05 UTCGHSA enrichment
  25. 2026-06-17 17:53 UTCEPSS rescore
  26. 2026-06-16 20:21 UTCEG score recompute
  27. 2026-06-16 20:21 UTCGHSA enrichment
  28. 2026-06-16 17:53 UTCEPSS rescore
  29. 2026-06-15 17:49 UTCEPSS rescore
  30. 2026-06-15 17:49 UTCEPSS rescore
  31. 2026-06-15 15:53 UTCEG score recompute
  32. 2026-06-15 15:53 UTCGHSA enrichment
  33. 2026-06-14 23:18 UTCEPSS rescore
  34. 2026-06-14 11:08 UTCEG score recompute
  35. 2026-06-14 11:08 UTCGHSA enrichment
  36. 2026-06-13 23:00 UTCEPSS rescore
  37. 2026-06-13 12:36 UTCEG score recompute
  38. 2026-06-13 12:36 UTCGHSA enrichment
  39. 2026-06-12 23:12 UTCEPSS rescore
  40. 2026-06-12 23:12 UTCEPSS rescore
  41. 2026-06-12 13:33 UTCEG score recompute
  42. 2026-06-12 13:33 UTCGHSA enrichment
  43. 2026-06-11 15:02 UTCEG score recompute
  44. 2026-06-11 15:02 UTCGHSA enrichment
  45. 2026-06-11 14:00 UTCEPSS rescore
  46. 2026-06-10 22:19 UTCEPSS rescore
  47. 2026-06-10 16:31 UTCEG score recompute
  48. 2026-06-10 16:31 UTCGHSA enrichment
  49. 2026-06-10 13:22 UTCEPSS rescore
  50. 2026-06-09 18:00 UTCEG score recompute
  51. 2026-06-09 18:00 UTCGHSA enrichment
  52. 2026-06-08 19:30 UTCEG score recompute
  53. 2026-06-08 19:29 UTCGHSA enrichment
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-07 16:39 UTCEG score recompute
  56. 2026-06-07 16:39 UTCGHSA enrichment
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-06 18:08 UTCEG score recompute
  59. 2026-06-06 18:08 UTCGHSA enrichment
  60. 2026-06-06 13:47 UTCEPSS rescore
  61. 2026-06-05 22:47 UTCEPSS rescore
  62. 2026-06-05 19:37 UTCEG score recompute
  63. 2026-06-05 19:37 UTCGHSA enrichment
  64. 2026-06-05 06:10 UTCEPSS rescore
  65. 2026-06-04 21:06 UTCEG score recompute
  66. 2026-06-04 21:06 UTCGHSA enrichment
  67. 2026-06-04 13:12 UTCEPSS rescore
  68. 2026-06-03 22:35 UTCEG score recompute
  69. 2026-06-03 22:35 UTCGHSA enrichment
  70. 2026-06-03 00:04 UTCEG score recompute
  71. 2026-06-03 00:04 UTCGHSA enrichment
  72. 2026-06-02 20:13 UTCEPSS rescore
  73. 2026-06-02 01:32 UTCEG score recompute
  74. 2026-06-02 01:32 UTCGHSA enrichment
  75. 2026-06-01 13:52 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6400?
CVE-2026-6400 is a medium vulnerability published on May 20, 2026. The Child Height Predictor by Ostheimer plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.3. This is due to missing nonce verification in the options() function, which handles plugin settings updates. The form template does not include a…
When was CVE-2026-6400 disclosed?
CVE-2026-6400 was first published in the National Vulnerability Database on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6400 actively exploited?
CVE-2026-6400 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6400?
CVE-2026-6400 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-6400?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6400, 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-2026-6400

Explore →

Is Your Infrastructure Affected by CVE-2026-6400?

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

Start Free Scan →Browse All CVEs