CVE-2026-65643

HIGHNVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 17, 2026

References (1)

Vendor Advisories for CVE-2026-65643(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 23× in last 7d / 79× 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. 2026-09-19 01:47 UTCEG score recompute
  2. 2026-09-19 01:47 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 14:23 UTCGHSA enrichment
  5. 2026-09-18 02:54 UTCEG score recompute
  6. 2026-09-18 02:54 UTCGHSA enrichment
  7. 2026-09-17 15:30 UTCGHSA enrichment
  8. 2026-09-17 06:07 UTCGHSA enrichment
  9. 2026-09-16 18:42 UTCEG score recompute
  10. 2026-09-16 18:42 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 05:01 UTCGHSA enrichment
  14. 2026-09-15 17:35 UTCGHSA enrichment
  15. 2026-09-15 06:08 UTCEG score recompute
  16. 2026-09-15 06:08 UTCGHSA enrichment
  17. 2026-09-14 18:43 UTCGHSA enrichment
  18. 2026-09-14 07:17 UTCGHSA enrichment
  19. 2026-09-13 19:53 UTCEG score recompute
  20. 2026-09-13 19:53 UTCGHSA enrichment
  21. 2026-09-13 08:29 UTCGHSA enrichment
  22. 2026-09-12 21:04 UTCEG score recompute
  23. 2026-09-12 21:04 UTCGHSA enrichment
  24. 2026-09-12 09:40 UTCGHSA enrichment
  25. 2026-09-11 22:15 UTCEG score recompute
Show 54 more
  1. 2026-09-11 22:15 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 10:49 UTCEG score recompute
  4. 2026-09-11 10:49 UTCGHSA enrichment
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 23:02 UTCGHSA enrichment
  7. 2026-09-10 11:38 UTCEG score recompute
  8. 2026-09-10 11:38 UTCGHSA enrichment
  9. 2026-09-09 23:41 UTCGHSA enrichment
  10. 2026-09-09 10:52 UTCGHSA enrichment
  11. 2026-09-08 23:28 UTCEG score recompute
  12. 2026-09-08 23:28 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-08 04:24 UTCGHSA enrichment
  15. 2026-09-07 16:59 UTCEG score recompute
  16. 2026-09-07 16:59 UTCGHSA enrichment
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-07 05:35 UTCGHSA enrichment
  19. 2026-09-06 18:09 UTCEG score recompute
  20. 2026-09-06 18:09 UTCGHSA enrichment
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-06 06:44 UTCGHSA enrichment
  23. 2026-09-05 19:20 UTCEG score recompute
  24. 2026-09-05 19:20 UTCGHSA enrichment
  25. 2026-09-05 15:31 UTCEPSS rescore
  26. 2026-09-05 07:56 UTCEG score recompute
  27. 2026-09-05 07:56 UTCGHSA enrichment
  28. 2026-09-04 20:31 UTCEG score recompute▲ 0.10
  29. 2026-09-04 20:31 UTCGHSA enrichment
  30. 2026-09-04 20:31 UTCNVD updateCVSS v3 → 8.8
  31. 2026-09-04 16:09 UTCEG score recompute
  32. 2026-09-04 16:09 UTCGHSA enrichment
  33. 2026-09-04 05:07 UTCEPSS rescore
  34. 2026-09-04 04:42 UTCGHSA enrichment
  35. 2026-09-03 17:15 UTCGHSA enrichment
  36. 2026-09-03 14:57 UTCGHSA enrichment
  37. 2026-09-03 03:29 UTCGHSA enrichment
  38. 2026-09-02 16:04 UTCEG score recompute
  39. 2026-09-02 16:04 UTCGHSA enrichment
  40. 2026-09-02 14:12 UTCEPSS rescore
  41. 2026-09-02 04:38 UTCEG score recompute
  42. 2026-09-02 04:38 UTCGHSA enrichment
  43. 2026-09-02 04:03 UTCEG score recompute
  44. 2026-09-02 04:03 UTCGHSA enrichment
  45. 2026-09-02 01:10 UTCEG score recompute
  46. 2026-09-02 01:09 UTCGHSA enrichment
  47. 2026-09-01 13:54 UTCEPSS rescore
  48. 2026-09-01 13:42 UTCEG score recompute
  49. 2026-09-01 13:42 UTCGHSA enrichment
  50. 2026-09-01 12:18 UTCEG score recompute
  51. 2026-09-01 12:18 UTCGHSA enrichment
  52. 2026-09-01 03:28 UTCEG score recompute
  53. 2026-09-01 02:37 UTCEG score recompute
  54. 2026-09-01 02:34 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCtc4dy/CVE-2026-65643-PoC-Toolkit
    First seen Sep 3, 2026

    🧰 CVE-2026-65643 – cPanel Domain Parking RCE Toolkit (CVSS 8.7) | Red/Blue Team suite for unpatched cPanel & WHM 11.x (110,134,136,138). 2 tools: Full Exploit (reverse shell, webshell, persistence, root passwd, file R/W, mass scan, Tor), Blue Team PoC (detection, reporting, audit). w/Python. 🦾 Only Use Ethically, Stay Legal <3

    Open source ↗

Frequently asked(5)

What is CVE-2026-65643?
CVE-2026-65643 is a high vulnerability published on September 1, 2026. Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.
When was CVE-2026-65643 disclosed?
CVE-2026-65643 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65643 actively exploited?
CVE-2026-65643 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 41.8% of all scored CVEs.
What is the CVSS score of CVE-2026-65643?
CVE-2026-65643 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-65643?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65643, 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-2026-65643

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