CVE-2026-4320

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.3Exploit: NoneExposed: 0

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

Authorization Bypass vulnerability in Creartia's ICMS software could allow an attacker to gain unauthorized access to protected features by manipulating the HTTP redirect headers of the login process, causing the script to continue running and enabling privilege escalation without the need for credentials.

CVSS v3
9.3
EG Score
9.3(medium)
EPSS
16.8%
KEV
Not listed

Published

May 18, 2026

Last Modified

May 18, 2026

Advisory Details (1)

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

Authorization Bypass in ICMS Content Management by Creartia Internet Consulting | INCIBE-CERT | INCIBE

https://www.incibe.es/en/incibe-cert/notices/aviso/authorization-bypass-icms-content-management-creartia-internet-consulting

Vendor Advisories for CVE-2026-4320(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 7× in last 7d / 117× 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 287 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-4320?
CVE-2026-4320 is a critical vulnerability published on May 18, 2026. Authorization Bypass vulnerability in Creartia's ICMS software could allow an attacker to gain unauthorized access to protected features by manipulating the HTTP redirect headers of the login process, causing the script to continue running and enabling privilege escalation without the need for…
When was CVE-2026-4320 disclosed?
CVE-2026-4320 was first published in the National Vulnerability Database on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4320 actively exploited?
CVE-2026-4320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-4320?
CVE-2026-4320 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-4320?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4320, 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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