# CVE-2026-12274: Tutor LMS < 3.9.13 - Instructor+ Arbitrary Post Overwrite via IDOR

> Instructors can overwrite any site post or page, including admin content, due to missing authorization checks in the content builder.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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:** 13 Jul 2026
- **Updated:** 13 Jul 2026
- **Also known as:** GHSA-c7pm-q6w7-5993

## What is CVE-2026-12274?

CVE-2026-12274 is a medium-severity missing authorization vulnerability in Unknown Tutor LMS, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Tutor LMS  WordPress plugin before 3.9.13 does not verify that the requesting user is allowed to edit a target post before overwriting it in one of its content-builder save handlers, authorizing the request only against an unrelated identifier, allowing authenticated users with instructor-level access to overwrite and take over any post or page on the site, including those owned by administrators.

## Which versions are affected by CVE-2026-12274?


## How do I fix CVE-2026-12274?

No fix has been published for CVE-2026-12274 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12274 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12274 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12274 and fix it if it is affected.

What it is: CVE-2026-12274 is a medium-severity missing authorization vulnerability in Unknown Tutor LMS, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12274 exists.

Affected product: Unknown Tutor 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-2026-12274/ (Markdown: https://insights.sbomify.com/CVE-2026-12274/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12274
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12274
- OSV: https://osv.dev/vulnerability/CVE-2026-12274

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12274/
Summaries are generated and may contain mistakes; the official description above is the record.