CVE-2026-63227

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH 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 — 4 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(high)
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
25%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Jul 30, 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 26× in last 7d / 26× 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. 2026-07-31 04:40 UTCGHSA enrichment
  2. 2026-07-31 00:50 UTCGHSA enrichment
  3. 2026-07-30 21:00 UTCGHSA enrichment
  4. 2026-07-30 17:05 UTCEG score recompute
  5. 2026-07-30 17:05 UTCGHSA enrichment
  6. 2026-07-30 16:28 UTCEPSS rescore
  7. 2026-07-30 15:42 UTCGHSA enrichment
  8. 2026-07-30 11:41 UTCEG score recompute
  9. 2026-07-30 11:41 UTCGHSA enrichment
  10. 2026-07-30 07:50 UTCGHSA enrichment
  11. 2026-07-30 03:56 UTCEG score recompute
  12. 2026-07-30 03:56 UTCGHSA enrichment
  13. 2026-07-30 01:30 UTCEPSS rescore
  14. 2026-07-30 01:30 UTCEPSS rescore
  15. 2026-07-30 00:06 UTCGHSA enrichment
  16. 2026-07-29 20:15 UTCGHSA enrichment
  17. 2026-07-29 16:25 UTCEG score recompute
  18. 2026-07-29 16:25 UTCGHSA enrichment
  19. 2026-07-29 15:33 UTCEG score recompute
  20. 2026-07-29 15:33 UTCGHSA enrichment
  21. 2026-07-29 15:16 UTCGHSA enrichment
  22. 2026-07-29 11:27 UTCEG score recompute
  23. 2026-07-29 11:27 UTCGHSA enrichment
  24. 2026-07-29 07:36 UTCEG score recompute
  25. 2026-07-29 06:39 UTCEG score recompute
Show 1 more
  1. 2026-07-29 06:37 UTCMITRE cvelistV5first tracked

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 74.6% 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

Explore the affected products and dependency analysis for CVE-2026-63227

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