# CVE-2026-111369: ClassroomIO through 1.0.0 Incorrect Authorization via Lesson Update and Delete Routes

> Authenticated students can modify or delete lessons in any course due to missing authorization checks on lesson update and delete routes.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA: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:** 15 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-qg24-w69h-hf3v

## What is CVE-2026-111369?

CVE-2026-111369 is a high-severity missing authorization vulnerability in ClassroomIO, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ClassroomIO through 1.0.0 contains an incorrect authorization vulnerability in the PUT and DELETE /:lessonId lesson routes that allows any course member, including students, to modify lessons. Authenticated students can supply arbitrary lesson ids to change titles and stored HTML content or delete lessons in their course and in other courses and organizations.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-111369?


## How do I fix CVE-2026-111369?

No fix has been published for CVE-2026-111369 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111369 being exploited?

There is no known exploitation of CVE-2026-111369 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111369 and fix it if it is affected.

What it is: CVE-2026-111369 is a high-severity missing authorization vulnerability in ClassroomIO, published on 15 Oct 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-2026-111369 in the wild and no public exploit code.

Affected product: ClassroomIO. 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-2026-111369/ (Markdown: https://insights.sbomify.com/CVE-2026-111369/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111369
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111369
- OSV: https://osv.dev/vulnerability/CVE-2026-111369

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111369/
Summaries are generated and may contain mistakes; the official description above is the record.