# CVE-2026-2206: WeKan Administrative Repair fixDuplicateLists.js FixDuplicateBleed access control


- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 8 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-97mf-v96f-5jp7

## What is CVE-2026-2206?

CVE-2026-2206 is a medium-severity vulnerability in WeKan, published on 8 Feb 2026. 

### Official description

A security flaw has been discovered in WeKan up to 8.20. This vulnerability affects unknown code of the file server/methods/fixDuplicateLists.js of the component Administrative Repair Handler. Performing a manipulation results in improper access controls. It is possible to initiate the attack remotely. Upgrading to version 8.21 is able to resolve this issue. The patch is named 4ce181d17249778094f73d21515f7f863f554743. It is advisable to upgrade the affected component.

Weakness: CWE-284 (Improper Access Control), CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2026-2206?

It affects 1 product.


Products: Wekan Project Wekan.

## How do I fix CVE-2026-2206?

No fix has been published for CVE-2026-2206 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2206 being exploited?

There is no known exploitation of CVE-2026-2206 in the wild and no public exploit code.

## Other vulnerabilities in WeKan

- [CVE-2026-30843](https://insights.sbomify.com/CVE-2026-30843/): Wekan has Cross-Board IDOR in Custom Fields Update Endpoints (critical 9.3)
- [CVE-2026-30844](https://insights.sbomify.com/CVE-2026-30844/): Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading (critical 9.3)
- [CVE-2026-30847](https://insights.sbomify.com/CVE-2026-30847/): Wekan Credential Leak via notificationUsers Publication Exposes Password Hashes and Session Tokens (critical 9.3)
- [CVE-2025-65780](https://insights.sbomify.com/CVE-2025-65780/): Missing authorization in n/a (high 8.8)
- [CVE-2026-30846](https://insights.sbomify.com/CVE-2026-30846/): Wekan Exposes All Global Webhook Integrations through globalwebhooks Publication (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2206 and fix it if it is affected.

What it is: CVE-2026-2206 is a medium-severity vulnerability in WeKan, published on 8 Feb 2026. 
Exploitation: There is no known exploitation of CVE-2026-2206 in the wild and no public exploit code.

Affected product: WeKan. 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-2026-2206/ (Markdown: https://insights.sbomify.com/CVE-2026-2206/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2206
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2206
- OSV: https://osv.dev/vulnerability/CVE-2026-2206

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2206/
Summaries are generated and may contain mistakes; the official description above is the record.