CVE-2026-56877

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 v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

16 Jul 2026, 07:16

Type	Values Removed	Values Added
References		() http://seclists.org/fulldisclosure/2026/Jul/20 -

13 Jul 2026, 23:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/07/12/1 - () http://www.openwall.com/lists/oss-security/2026/07/12/2 -

13 Jul 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-13 22:16

Updated : 2026-07-16 07:16

NVD link : CVE-2026-56877

Mitre link : CVE-2026-56877

CVE.ORG link : CVE-2026-56877

JSON object : View

Products Affected

No product.

CWE

CWE-472

External Control of Assumed-Immutable Web Parameter

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