High severity · published Oct 18, 2026
CVE-2026-111999
Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiver
7.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
vanus · vanus-labs
0.8.0 through 0.9.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111999
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111999
github.com
https://github.com/vanus-labs/vanus/blob/v0.9.0/internal/gateway/gateway.go#L81-L124
github.com
https://github.com/vanus-labs/vanus/issues/647
www.vulncheck.com
https://www.vulncheck.com/advisories/vanus-0.8.0-through-0.9.0-missing-authentication-via-gateway-cloudevents-http-receiver
More from vanus
9.8
CVE-2026-111998
Vanus 0.8.0 through 0.9.0 Default Admin Credentials via Gateway
7.6
CVE-2026-112000
Vanus 0.8.0 through 0.9.0 Missing Authorization in Gateway Streaming RPCs