---
id: CVE-2026-111999
title: >-
  Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP
  Receiver
summary: >-
  Vanus 0.8.0 through 0.9.0 contains a missing authentication vulnerability that
  allows unauthenticated remote attackers to publish events to any eventbus
  through the gateway CloudEvents HTTP receiver. Attackers can send forged
  CloudEvents…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-306
vendor: vanus-labs
product: vanus
affected:
  - vanus >= 0.8.0 <= 0.9.0
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T11:38:25.071Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111999'
references:
  - url: 'https://github.com/vanus-labs/vanus/issues/647'
  - url: >-
      https://github.com/vanus-labs/vanus/blob/v0.9.0/internal/gateway/gateway.go#L81-L124
  - url: >-
      https://www.vulncheck.com/advisories/vanus-0.8.0-through-0.9.0-missing-authentication-via-gateway-cloudevents-http-receiver
    label: >-
      VulnCheck Advisory: Vanus 0.8.0 through 0.9.0 Missing Authentication via
      Gateway CloudEvents HTTP Receiver
tags:
  - cve.org
ingestedAt: '2026-10-18T11:40:26.625Z'
---

## Overview

Vanus 0.8.0 through 0.9.0 contains a missing authentication vulnerability that allows unauthenticated remote attackers to publish events to any eventbus through the gateway CloudEvents HTTP receiver. Attackers can send forged CloudEvents to the /namespaces/{ns}/eventbus/{name}/events or legacy /gateway/{name} paths, bypassing token authentication and authPublish checks, so they are stored and delivered to subscription sinks.

## Affected

- `vanus >= 0.8.0 <= 0.9.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.