CVE-2026-111999

Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiver

State: Published
Severity: 8.7 High
Published: Oct 18, 2026
Updated: Oct 20, 2026
Reserved: Oct 18, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	VulnCheck

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
vanusvanus-labs	0.8.0 through 0.9.0Affected

References

https://github.com/vanus-labs/vanus/issues/647issue-tracking
https://github.com/vanus-labs/vanus/blob/v0.9.0/internal/gateway/gateway.go#L81-L124technical-description
VulnCheck Advisory: Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiverthird-party-advisory

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