---
id: "CVE-2026-115334"
kind: "vulnerability"
aliases: ["CVE-2026-115334"]
title: "Lotus: authorization bypass lets any user join other organizations"
severity: "high"
cvss: 7.6
epss: 0.00236
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["lotus", "multi-tenant", "other", "self-hosted"]
not_affected_if: ["self-registration-disabled", "single-organization"]
published_at: "2026-10-22T11:17:52+00:00"
first_seen_at: "2026-10-23T21:57:31+00:00"
updated_at: "2026-10-25T03:14:23+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115334", "first_seen_at": "2026-10-23T21:57:31+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-115334", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# Lotus: authorization bypass lets any user join other organizations

Lotus through 0.10.2 has an authorization flaw in ChangeUserOrganizationView.post that lets any logged-in user join an organization by supplying its UUID. An attacker who knows another tenant's UUID can reach that tenant's data and billing configuration.

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

## How to check

- Check the Lotus version in use: `unknown` if the sources do not say how it is installed or where the version is recorded.
- Look for the `/app/switch_organization/` endpoint in the deployed application and confirm whether self-registration is enabled.

## Fix

- Upgrade Lotus past `0.10.2`: the fixed version is unknown from the sources.
- Until patched, disable self-registration or restrict `/app/switch_organization/` to trusted users.

## Timeline

- 2026-10-23T21:57:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115334
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-115334

## From the sources

Lotus through 0.10.2 contains an authorization bypass vulnerability in ChangeUserOrganizationView.post that allows authenticated users to join any organization by supplying its UUID. Self-registered attackers who know another organization's UUID can send a POST request to /app/switch_organization/ to access that tenant's data and billing configuration.

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