# CVE-2026-55652: Auth bypass in wekan

> Unauthenticated attackers can bypass IP allowlists via X-Forwarded-For spoofing to take over any account, including admin, in Wekan.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jul 2026
- **Updated:** 17 Jul 2026
- **Also known as:** GHSA-jggc-qvfc-jr6x

## What is CVE-2026-55652?

CVE-2026-55652 is a critical authentication bypass vulnerability in wekan, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Wekan is open source kanban built with Meteor. Prior to 9.46, header-login with HEADER_LOGIN_TRUSTED_IPS uses getRequestIp() in server/lib/headerLoginAuth.js to trust the client-supplied X-Forwarded-For header before the real socket address, allowing an unauthenticated attacker to send HEADER_LOGIN_ID for any username and receive a meteor_login_token session, including for admin. This issue is fixed in version 9.46.

Weakness: CWE-290 (Authentication Bypass by Spoofing), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-55652?


## How do I fix CVE-2026-55652?

No fix has been published for CVE-2026-55652 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55652 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55652 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55652 and fix it if it is affected.

What it is: CVE-2026-55652 is a critical authentication bypass vulnerability in wekan, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55652 exists.

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-2026-55652/ (Markdown: https://insights.sbomify.com/CVE-2026-55652/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55652
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55652
- OSV: https://osv.dev/vulnerability/CVE-2026-55652

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55652/
Summaries are generated and may contain mistakes; the official description above is the record.