---
title: "CVE-2026-111999: Vanus - Authentication Bypass"
description: "Vanus 0.8.0 through 0.9.0 contains a missing authentication vulnerability caused by lack of proper token authentication in the CloudEvents HTTP receiver, letting unauthenticated remote attackers publish events to any eventbus, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-111999/
---

# CVE-2026-111999 Vanus - Authentication Bypass

Vanus 0.8.0 through 0.9.0 contains a missing authentication vulnerability caused by lack of proper token authentication in the CloudEvents HTTP receiver, letting unauthenticated remote attackers publish events to any eventbus, exploit requires no authentication.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111999)

## Details

Type

Broken Authentication

Impact

Data Tampering

CVSS vector

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

Published

18 October 2026

Updated

19 October 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Update to a version later than 0.9.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-111999](https://nvd.nist.gov/vuln/detail/CVE-2026-111999)
- [https://www.vulncheck.com/advisories/vanus-0.8.0-through-0.9.0-missing-authentication-via-gateway-cloudevents-http-receiver](https://www.vulncheck.com/advisories/vanus-0.8.0-through-0.9.0-missing-authentication-via-gateway-cloudevents-http-receiver)
- [https://github.com/vanus-labs/vanus/blob/v0.9.0/internal/gateway/gateway.go#L81-L124](https://github.com/vanus-labs/vanus/blob/v0.9.0/internal/gateway/gateway.go#L81-L124)
- [https://github.com/vanus-labs/vanus/issues/647](https://github.com/vanus-labs/vanus/issues/647)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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