# CVE-2026-56877: Business logic in SCORM Lab Launch Integration

> Authenticated users can bypass rate limits and exhaust other users' lab allocations by manipulating the userId parameter, causing denial of service.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jul 2026
- **Updated:** 16 Jul 2026
- **Also known as:** GHSA-p34h-76m7-24qh

## What is CVE-2026-56877?

CVE-2026-56877 is a medium-severity vulnerability in Skillable SCORM Lab Launch Integration, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-472 (External Control of Assumed-Immutable Web Parameter)

## Which versions are affected by CVE-2026-56877?


## How do I fix CVE-2026-56877?

No fix has been published for CVE-2026-56877 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-56877 being exploited?

There is no known exploitation of CVE-2026-56877 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-56877 and fix it if it is affected.

What it is: CVE-2026-56877 is a medium-severity vulnerability in Skillable SCORM Lab Launch Integration, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-56877 in the wild and no public exploit code.

Affected product: Skillable SCORM Lab Launch Integration. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-56877/ (Markdown: https://insights.sbomify.com/CVE-2026-56877/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-56877
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-56877
- OSV: https://osv.dev/vulnerability/CVE-2026-56877

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-56877/
Summaries are generated and may contain mistakes; the official description above is the record.