CVE-2026-56877

SCORM Lab Launch Rate‑Limit Bypass Enables Denial of Service

Published Jul 13, 2026 CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title SCORM Lab Launch Rate‑Limit Bypass Enables Denial of Service
Type Values Removed Values Added
Title Per‑User Rate‑Limit Bypass in Skillable SCORM Lab Launch Enables Denial of Service
Type Values Removed Values Added
First Time appeared Skillable
Skillable scorm Lab Launch Integration
Vendors & Products Skillable
Skillable scorm Lab Launch Integration
Type Values Removed Values Added
Title Per‑User Rate‑Limit Bypass in Skillable SCORM Lab Launch Enables Denial of Service
Type Values Removed Values Added
Title Unvalidated userId in Skillable SCORM Lab Launch Enables Rate‑Limit Bypass
Type Values Removed Values Added
Title Unvalidated userId in Skillable SCORM Lab Launch Enables Rate‑Limit Bypass
Type Values Removed Values Added
Title Skillable SCORM Lab Launch Rate Limit Bypass via Unvalidated userId Parameter
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Skillable SCORM Lab Launch Rate Limit Bypass via Unvalidated userId Parameter
Type Values Removed Values Added
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.
Weaknesses CWE-472
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 16, 2026, 6:49 AM
Reserved
Jun 23, 2026, 3:43 PM
Status
Deferred
Published
Jul 13, 2026, 10:16 PM
Modified
Oct 24, 2026, 10:10 PM