# CVE-2026-11355: Missing authorization in DT LMS – elearning, WordPress LMS Plugin

> Unauthenticated attackers can modify arbitrary plugin settings via AJAX handlers due to missing capability checks, altering site appearance and behavior.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-xcq8-9qm4-gwm6

## What is CVE-2026-11355?

CVE-2026-11355 is a medium-severity missing authorization vulnerability in designthemes DT LMS – elearning,  WordPress LMS Plugin, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The DT LMS – elearning, WordPress LMS plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on multiple AJAX handlers (including dtlms_save_poc_settings, dtlms_save_skin_settings, and dtlms_save_options_settings) in versions up to, and including, 1.1. These handlers are registered on the wp_ajax_nopriv_* hook and contain no capability check, no nonce verification, and pass user-supplied data directly to update_option(). This makes it possible for unauthenticated attackers to overwrite arbitrary plugin option values stored in the wp_options table, including Point-of-Contact email configuration and skin/branding settings, which can be used to alter the appearance and behavior of the LMS for all site visitors.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-11355?


## How do I fix CVE-2026-11355?

No fix has been published for CVE-2026-11355 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-11355 being exploited?

There is no known exploitation of CVE-2026-11355 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11355 and fix it if it is affected.

What it is: CVE-2026-11355 is a medium-severity missing authorization vulnerability in designthemes DT LMS – elearning,  WordPress LMS Plugin, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-11355 in the wild and no public exploit code.

Affected product: designthemes DT LMS – elearning,  WordPress LMS Plugin. 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-2026-11355/ (Markdown: https://insights.sbomify.com/CVE-2026-11355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11355
- OSV: https://osv.dev/vulnerability/CVE-2026-11355

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-11355/
Summaries are generated and may contain mistakes; the official description above is the record.