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CVE-2026-111998

9.8 · CRITICAL

Vanus 0.8.0 through 0.9.0 contains a default credentials vulnerability that allows unauthenticated remote attackers to gain cluster-admin access by using the hardcoded admin token.

Published Oct 18, 2026CWE-1392EPSS 0.69%

Overview

CVE-2026-111998 is a critical-severity vulnerability. It was published on October 18, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Vanus 0.8.0 through 0.9.0 contains a default credentials vulnerability that allows unauthenticated remote attackers to gain cluster-admin access by using the hardcoded admin token. Attackers can send the fixed Bearer token to the gateway gRPC proxy port to manage namespaces, eventbuses, users, tokens, and role bindings, and read or publish events.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/vanus-labs/vanus/blob/v0.9.0/internal/controller/tenant/controller.go#L449-L500GitHubgithub.com/vanus-labs/vanus/blob/v0.9.0/internal/primitive/constants.go#L37GitHubgithub.com/vanus-labs/vanus/issues/647Refwww.vulncheck.com/advisories/vanus-0.8.0-through-0.9.0-default-admin-credentials-via-gatewayGitHubgithub.com/vanus-labs/vanus/issues/647

How CyberStrike helps

Frequently asked questions

What is CVE-2026-111998?

CVE-2026-111998 is a critical-severity vulnerability. It was published on October 18, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-111998?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-111998?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-111998?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-111998 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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