CVE-2026-42401

MEDIUMNVD 4.14.1—
EchelonGraph scoreMEDIUM confidence

Score 4.1 from GitHub Security Advisory published 2026-05-28. NVD baseline CVSS 4.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
4.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.1Exploit: NoneExposed: 0

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

Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.

CVSS v3
4.1
EG Score
4.1(medium)
EPSS
3.9%
KEV
Not listed

Published

May 28, 2026

Last Modified

May 29, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Kibana 8.19.16, 9.3.5 Security Update (ESA-2026-34) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-security-update-esa-2026-34/386552

Vendor Advisories for CVE-2026-42401(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 11× in last 7d / 61× 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 122 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42401?
CVE-2026-42401 is a medium vulnerability published on May 28, 2026. Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently…
When was CVE-2026-42401 disclosed?
CVE-2026-42401 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42401 actively exploited?
CVE-2026-42401 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42401?
CVE-2026-42401 has a CVSS v3 base score of 4.1 (NVD).
How do I remediate CVE-2026-42401?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42401, 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.

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