# CVE-2026-112328: Sensei LMS 4.26.4 Broken Access Control via add_new_module_term AJAX

> Authenticated teachers can modify course content owned by others due to missing authorization checks in the module term assignment handler.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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:** 19 Oct 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-3hm9-hgv5-w9hg

## What is CVE-2026-112328?

CVE-2026-112328 is a medium-severity missing authorization vulnerability in Automattic Sensei LMS, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Sensei LMS WordPress plugin before 4.26.4 contains a broken access control vulnerability in the add_new_module_term AJAX handler that allows authenticated Teacher-role attackers to assign module taxonomy terms to arbitrary courses by supplying a crafted course_id, since the handler validates only a generic nonce and checks manage_options solely for slug prefixing rather than verifying course edit permissions. Attackers can reuse a nonce obtained from their own course metabox to call wp_set_object_terms against courses owned by other teachers or administrators, enabling unauthorized modification of course content they do not own.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-112328?


## How do I fix CVE-2026-112328?

No fix has been published for CVE-2026-112328 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-112328 being exploited?

There is no known exploitation of CVE-2026-112328 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-112328 and fix it if it is affected.

What it is: CVE-2026-112328 is a medium-severity missing authorization vulnerability in Automattic Sensei LMS, published on 19 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-2026-112328 in the wild and no public exploit code.

Affected product: Automattic Sensei 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-2026-112328/ (Markdown: https://insights.sbomify.com/CVE-2026-112328/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-112328
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-112328
- OSV: https://osv.dev/vulnerability/CVE-2026-112328

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-112328/
Summaries are generated and may contain mistakes; the official description above is the record.