CVE-2026-56877

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Summary

CVECVE-2026-56877
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-13 22:16:48 UTC
Updated2026-07-16 07:16:48 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS: 0.004100000 probability, percentile 0.332060000 (date 2026-07-16)

Problem Types: CWE-472 | CWE-472 CWE-472 External Control of Assumed-Immutable Web Parameter

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNACVSS6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Skillable SCORM Lab Launch Integration affected 2026-07-13 custom Not specified

References

ReferenceSourceLinkTags
www.skillable.com/security [email protected] www.skillable.com
www.openwall.com/lists/oss-security/2026/07/12/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
www.openwall.com/lists/oss-security/2026/07/12/2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
seclists.org/fulldisclosure/2026/Jul/20 af854a3a-2127-422b-91ae-364da2661108 seclists.org
www.openwall.com/lists/oss-security/2026/07/12/1 [email protected] www.openwall.com
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