CVE-2026-63227

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-29. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
No patch confirmed yet.
generic

Koollab LMS - Multiple Vulnerabilities including Remote Code Execution, SQL Injection, and Authentication Bypass | Cyber Security Agency of Singapore

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

Vendor Advisories for CVE-2026-63227(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 36× in last 7d / 167× 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 328 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63227?
CVE-2026-63227 is a critical vulnerability published on July 29, 2026. An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server.
When was CVE-2026-63227 disclosed?
CVE-2026-63227 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63227 actively exploited?
CVE-2026-63227 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.2% of all scored CVEs.
What is the CVSS score of CVE-2026-63227?
CVE-2026-63227 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-63227?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63227, 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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