CVE-2026-5842 decolua 9router Administrative API Endpoint api authorization
Remote attackers can bypass authorization on the 9router Administrative API endpoint, requiring an upgrade to secure the system.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-5842?
CVE-2026-5842 is a medium-severity authentication bypass vulnerability in decolua 9router, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in decolua 9router up to 0.3.47. The impacted element is an unknown function of the file /api of the component Administrative API Endpoint. The manipulation leads to authorization bypass. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 0.3.75 is sufficient to resolve this issue. It is suggested to upgrade the affected component.
Which versions are affected by CVE-2026-5842?
2 open source packages ship an affected version, including 9router.
| Package | Affected | Fixed in |
|---|---|---|
9router npm | All versions | 0.3.75 |
9router npm | All versions | 0.3.75 |
How do I fix CVE-2026-5842?
Upgrade 9router to 0.3.75 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-5842 being exploited?
There is no known exploitation of CVE-2026-5842 in the wild and no public exploit code.
Sources
Also known as GHSA-xrrh-p7f2-27vm.