CVE-2026-34427: Vvveb < 1.0.8.1 Privilege Escalation via admin/user/save
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 roleid=1 into profile save requests to escalate to Super Administrator privileges, enabling plugin upload functionality for remote code execution.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Vvvebto a version that resolves this vulnerability.Fixed in 1.0.8.1 - Compensating control
Restrict access to the Vvveb admin/user profile save endpoint so only authorized administrators can submit profile save requests (limit via authentication/ACL/network controls) to reduce exploitation of role_id injection.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34427?
CVE-2026-34427 is classified as a privilege escalation vulnerability, allowing attackers to modify their user roles.
How do I fix CVE-2026-34427?
To mitigate CVE-2026-34427, users should upgrade Vvveb to version 1.0.8.1 or later.
Who is affected by CVE-2026-34427?
CVE-2026-34427 affects all authenticated users of Vvveb versions prior to 1.0.8.1.
What can attackers do with CVE-2026-34427?
Attackers can exploit CVE-2026-34427 to escalate their privileges by modifying their own user profile fields.
When was CVE-2026-34427 disclosed?
CVE-2026-34427 was disclosed alongside the release of Vvveb version 1.0.8.1.