CVE-2026-4548 mickasmt next-saas-stripe-starter update-user-role.ts updateUserrole improper authorization
Attackers can improperly modify user roles via the update-user-role function, leading to privilege escalation in the Next.js SaaS starter application.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4548?
CVE-2026-4548 is a medium-severity missing authorization vulnerability in mickasmt next-saas-stripe-starter, published on 22 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in mickasmt next-saas-stripe-starter 1.0.0. Affected by this vulnerability is the function updateUserrole of the file actions/update-user-role.ts. The manipulation of the argument userId/role results in improper authorization. The attack may be launched remotely.
Which versions are affected by CVE-2026-4548?
How do I fix CVE-2026-4548?
No fix has been published for CVE-2026-4548 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4548 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4548 exists.
Sources
Also known as GHSA-8fh2-hm78-4frg.