CVE-2026-54420

HIGHPre-NVD 8.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-06-15), indicating real-world exploitation has been confirmed by US federal agencies. a secondary CVSS source baseline 8.5 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 4 sources updated this weekExploited in the wild
8.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 1%CVSS: 8.5Exploit: NoneExposed: 0

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

LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.

CVSS v3
8.5
EG Score
9.0(high)
EPSS
66.1%
KEV
⚠ Exploited

Published

June 14, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

cPanel Plugin Features - LiteSpeed Technologies

https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
generic🔴 Active Exploitation

Security Update for LiteSpeed cPanel Plugin ⋆ LiteSpeed Blog

https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/

Vendor Advisories for CVE-2026-54420(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 91× in last 7d / 290× 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 290 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2026-54420?
CVE-2026-54420 is a high vulnerability published on June 14, 2026. LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.
When was CVE-2026-54420 disclosed?
CVE-2026-54420 was first published in the National Vulnerability Database on June 14, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54420 actively exploited?
Yes. CISA added CVE-2026-54420 to the Known Exploited Vulnerabilities catalog on June 15, 2026, affecting LiteSpeed cPanel Plugin. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-54420?
CVE-2026-54420 has a CVSS v3 base score of 8.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2026-54420?
CVE-2026-54420 affects LiteSpeed cPanel Plugin. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-54420?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54420, 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-2026-54420

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