# CVE-2026-6642: Cross-site scripting in Media Library Assistant

> Authenticated attackers can inject scripts via bulk edit presets that execute when administrators import them, potentially leading to account takeover.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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:** 11 Sep 2026
- **Updated:** 11 Sep 2026
- **Also known as:** GHSA-jr9v-hfwr-qhgm

## What is CVE-2026-6642?

CVE-2026-6642 is a medium-severity cross-site scripting vulnerability in dglingren Media Library Assistant, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Media Library Assistant plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the bulk edit preset export/import mechanism in versions up to and including 3.35. This is due to insufficient output escaping on preset field values when they are rendered in HTML attribute contexts in the mla_generate_bulk_edit_form_fieldsets() function and mla-bulk-edit-fieldsets.tpl template. While wp_kses() filtering is applied during preset export for users without unfiltered_html capability, this does not prevent attribute injection attacks since the malicious payload consists of quotes and HTML attributes rather than HTML tags. When preset values are retrieved and rendered, they are directly assigned to template variables without esc_attr() escaping and then inserted into input element value attributes via simple string replacement. This makes it possible for authenticated attackers, with Author-level access and above (upload_files capability), to inject arbitrary web scripts that execute when an administrator imports the poisoned preset and the targeted input field receives focus.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-6642?


## How do I fix CVE-2026-6642?

No fix has been published for CVE-2026-6642 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-6642 being exploited?

There is no known exploitation of CVE-2026-6642 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-6642 and fix it if it is affected.

What it is: CVE-2026-6642 is a medium-severity cross-site scripting vulnerability in dglingren Media Library Assistant, published on 11 Sep 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-2026-6642 in the wild and no public exploit code.

Affected product: dglingren Media Library Assistant. 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-2026-6642/ (Markdown: https://insights.sbomify.com/CVE-2026-6642/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-6642
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6642
- OSV: https://osv.dev/vulnerability/CVE-2026-6642

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-6642/
Summaries are generated and may contain mistakes; the official description above is the record.