CVE-2026-63227
Authenticated SCORM upload allows PHP webshell upload and remote code execution on Koollab LMS.
Is CVE-2026-63227 being exploited?
Not confirmed. CVE-2026-63227 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-63227?
CVE-2026-63227 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-63227?
Not known from our data. No patch reference has been recorded for CVE-2026-63227, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-63227 affect?
CVE-2026-63227 affects Koollab LMS (SCORM module upload), Web server hosting LMS (PHP). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-63227?
Disable SCORM uploads, restrict designer roles, block execution in upload dirs, apply vendor patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated module designers can upload SCORM packages with PHP webshells to a public directory and execute arbitrary code as the web server user (RCE).
Immediate action required
- affected5.3.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.