CVE-2026-111999 Vanus 0.8.0 through 0.9.0 Missing Authentication via Gateway CloudEvents HTTP Receiver
Unauthenticated attackers can publish forged events to any eventbus via the gateway, bypassing authentication checks and delivering data to subscribers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111999?
CVE-2026-111999 is a high-severity missing authorization vulnerability in vanus-labs vanus, published on 18 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-111999?
How do I fix CVE-2026-111999?
No fix has been published for CVE-2026-111999 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-111999 being exploited?
There is no known exploitation of CVE-2026-111999 in the wild and no public exploit code.
Sources
Also known as GHSA-v6f2-wm97-3p2m.