# CVE-2026-63241: Insecure direct object reference vulnerability

> Authenticated users can view other users' private learning progress due to missing authorization checks in Koollab LMS.

- **Severity:** Low 3.1 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **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:** 29 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** GHSA-p92f-pg8m-v46g

## What is CVE-2026-63241?

CVE-2026-63241 is a low-severity missing authorization vulnerability in Three Learning Koollab LMS, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An insecure direct object reference
vulnerability in Koollab LMS allowed an authenticated user to query the course completion progress
of any other user without authorisation, disclosing private learning progress
information.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-63241?


## How do I fix CVE-2026-63241?

No fix has been published for CVE-2026-63241 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-63241 being exploited?

There is no known exploitation of CVE-2026-63241 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63241 and fix it if it is affected.

What it is: CVE-2026-63241 is a low-severity missing authorization vulnerability in Three Learning Koollab LMS, published on 29 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-2026-63241 in the wild and no public exploit code.

Affected product: Three Learning Koollab LMS. 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-2026-63241/ (Markdown: https://insights.sbomify.com/CVE-2026-63241/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63241
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63241
- OSV: https://osv.dev/vulnerability/CVE-2026-63241

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63241/
Summaries are generated and may contain mistakes; the official description above is the record.