---
id: "CVE-2026-113596"
kind: "vulnerability"
aliases: ["CVE-2026-113596"]
title: "Webstudio: missing authorization lets logged-in users read other projects' data"
severity: "low"
cvss: 3.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["multi-user", "other", "self-hosted", "webstudio"]
not_affected_if: ["single-user-instance", "version-0.256.0-or-later"]
published_at: "2026-10-20T16:17:08+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T04:47:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113596", "first_seen_at": "2026-10-23T21:57:20+00:00"}]
---

# Webstudio: missing authorization lets logged-in users read other projects' data

Webstudio before 0.256.0 lacks an authorization check on the publishedBuilds and findManyByIds tRPC procedures. A logged-in user who knows another user's project UUID can read that project's publish history, titles, domains, preview images and latest builds.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Webstudio version; versions before `0.256.0` are affected
- Review whether the self-hosted or deployed instance allows multiple user accounts
- unknown whether other configuration changes exposure

## Fix

- Upgrade Webstudio to `0.256.0` or later
- unknown whether a workaround exists before upgrading

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113596

## From the sources

Webstudio before 0.256.0 contains a missing authorization vulnerability that allows authenticated users to read other users' project data via the publishedBuilds and findManyByIds tRPC procedures. Attackers who know another user's project UUID can query the /trpc handler to retrieve publish history, titles, domains, preview images, and latest builds.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_