# CVE-2026-11621: Dcat-Admin User Setting upload editorMDUpload unrestricted upload

> Remote attackers can upload malicious files via the editorMDUpload function in Dcat-Admin, potentially leading to code execution.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-8ppw-2j69-mvrj

## What is CVE-2026-11621?

CVE-2026-11621 is a medium-severity vulnerability in Dcat-Admin, published on 9 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A weakness has been identified in Dcat-Admin up to 2.2.3-beta. This impacts the function editorMDUpload of the file /admin/dcat-api/editor-md/upload of the component User Setting Page. This manipulation of the argument editormd-image-file causes unrestricted upload. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-11621?


## How do I fix CVE-2026-11621?

No fix has been published for CVE-2026-11621 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-11621 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11621 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11621 and fix it if it is affected.

What it is: CVE-2026-11621 is a medium-severity vulnerability in Dcat-Admin, published on 9 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11621 exists.

Affected product: Dcat-Admin. 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-2026-11621/ (Markdown: https://insights.sbomify.com/CVE-2026-11621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11621
- OSV: https://osv.dev/vulnerability/CVE-2026-11621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-11621/
Summaries are generated and may contain mistakes; the official description above is the record.