CVE-2026-56877CWE-472

The SCORM lab launch endpoint in Skillable (scorm.skillable.com) through 2026-07-13 does not validate the client-supplied userId parameter against the…

Medium · published July 13, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
32.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00393 · 32.3th percentile
Weakness
CWE-472 · External Control of Assumed-Immutable Web Parameter
Published
2026-07-13T21:51Z
EPSS history
Timeline
  • 13 JUL 21:51Z
    The SCORM lab launch endpoint in Skillable (scorm.skillable.com) through 2026-07-13 does not validate the client-supplied userId parameter against the…
    cvelistv5