CVE-2026-34427 Vvveb < 1.0.8.1 Privilege Escalation via admin/user/save
Authenticated users can escalate to Super Administrator by modifying role_id in profile save requests, enabling remote code execution via plugin upload.
- 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-2026-34427?
CVE-2026-34427 is a high-severity vulnerability in givanz Vvveb, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vvveb prior to 1.0.8.1 contains a privilege escalation vulnerability in the admin user profile save endpoint that allows authenticated users to modify privileged fields on their own profile. Attackers can inject role_id=1 into profile save requests to escalate to Super Administrator privileges, enabling plugin upload functionality for remote code execution.
Weakness: CWE-915
Which versions are affected by CVE-2026-34427?
How do I fix CVE-2026-34427?
No fix has been published for CVE-2026-34427 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-34427 being exploited?
There is no known exploitation of CVE-2026-34427 in the wild and no public exploit code.
Sources
Also known as GHSA-fxgc-2fpp-hx5w.