Origin Validation Error Affecting github.com/kumahq/kuma/pkg/api-server package, versions >=0.1.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMKUMAHQKUMAPKGAPISERVER-17423163
- published23 Jun 2026
- disclosed28 May 2026
- crediteldudareeno
Introduced: 28 May 2026
CVE-2026-45021 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Origin Validation Error via the default configuration of kuma-cp when both CorsAllowedDomains is set to allow all origins and LocalhostIsAdmin is enabled. An attacker can obtain administrative tokens and signing keys by enticing an operator to visit a malicious webpage while the control plane is accessible from their browser.