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CVE-2026-111999— Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiver

Quick assessment

Affected
vanus-labs vanus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vanus 0.8.0 至 0.9.0 版本存在身份验证缺失漏洞，允许未认证的远程攻击者通过网关的 CloudEvents HTTP 接收器向任意事件总线（eventbus）发布事件。攻击者可以向 或旧版路径 发送伪造的 CloudEvents，从而绕过令牌身份验证和 检查，导致这些事件被存储并投递至订阅的接收端（sink）。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-111999

Vulnerability Information
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Vulnerability Title
Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiver
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vanus-labs vanus 0.8.0 ~ 0.9.0 -

II. Public POCs for CVE-2026-111999

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III. Intelligence Information for CVE-2026-111999

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Vendor Advisories for CVE-2026-111999 (1)

Vendor Pages for CVE-2026-111999 (1)

Other References for CVE-2026-111999 (1)

Same Patch Batch · vanus-labs · 2026-10-18 · 3 CVEs total

CVE-2026-111998 9.8 CRITICAL Vanus 0.8.0 through 0.9.0 Default Admin Credentials via Gateway
CVE-2026-112000 7.6 HIGH Vanus 0.8.0 through 0.9.0 Missing Authorization in Gateway Streaming RPCs

IV. Related Vulnerabilities

Same product: vanus
Same vendor: vanus-labs
Same weakness: CWE-306

V. Comments for CVE-2026-111999

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