Vulnerability Description
The SCORM lab launch endpoint in Skillable (scorm.skillable.com) through 2026-07-13 does not validate the client-supplied userId parameter against the authenticated SCORM session token. An authenticated user can substitute arbitrary userId values to bypass per-user lab launch rate limits and consume other users' lab allocations, resulting in denial of service against targeted users' lab and exam access. Skillable was formerly named Learn on Demand Systems.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://www.openwall.com/lists/oss-security/2026/07/12/1
- https://www.skillable.com/security/
- http://seclists.org/fulldisclosure/2026/Jul/20
- http://www.openwall.com/lists/oss-security/2026/07/12/1
- http://www.openwall.com/lists/oss-security/2026/07/12/2
FAQ
What is CVE-2026-56877?
CVE-2026-56877 is a vulnerability with a CVSS score of 6.3 (MEDIUM). The SCORM lab launch endpoint in Skillable (scorm.skillable.com) through 2026-07-13 does not validate the client-supplied userId parameter against the authenticated SCORM session token. An authenticat...
How severe is CVE-2026-56877?
CVE-2026-56877 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56877?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.