What is the CVSS score of CVE-2026-29789?

CVE-2026-29789 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of PHP are affected by CVE-2026-29789?

A critical authorization vulnerability in Vito (versions ≤3.20.3) allows attackers to bypass access controls and potentially gain unauthorized control over server deployments and PHP application…

How to fix or mitigate CVE-2026-29789?

Within 24 hours: Audit access logs for suspicious activity; restrict network access to Vito to trusted IPs only; notify all Vito administrators of the vulnerability. Within 7 days: Implement Web Application Firewall (WAF) rules to block unauthorized API/admin requests; segment Vito infrastructure from production networks; consider disabling non-essential deployment features. Within 30 days: Evaluate alternative deployment solutions; maintain close contact with vendor for patch availability; conduct full security assessment of compromised systems if breach suspected.

PHP CVE-2026-29789

CRITICAL

Missing Authorization (CWE-862)

2026-03-06 security-advisories@github.com

PHP Authentication Bypass Vito

9.9

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 06, 2026 - 21:16 nvd

CRITICAL 9.9

DescriptionGitHub Advisory

Vito is a self-hosted web application that helps manage servers and deploy PHP applications into production servers. Prior to version 3.20.3, a missing authorization check in workflow site-creation actions allows an authenticated attacker with workflow write access in one project to create/manage sites on servers belonging to other projects by supplying a foreign server_id. This issue has been patched in version 3.20.3.