Use of Hard-coded Credentials Affecting istio.io/istio/pilot/pkg/xds package, versions <1.27.8>=1.28.0-alpha.0 <1.28.5>=1.29.0-alpha.0 <1.29.1
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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Start learning- Snyk IDSNYK-GOLANG-ISTIOIOISTIOPILOTPKGXDS-15517121
- published13 Mar 2026
- disclosed11 Mar 2026
- creditOleh Konko
Introduced: 11 Mar 2026
CVE-2026-31837 Â (opens in a new tab)How to fix?
Upgrade istio.io/istio/pilot/pkg/xds to version 1.27.8, 1.28.5, 1.29.1 or higher.
Overview
Affected versions of this package are vulnerable to Use of Hard-coded Credentials in the JWKS resolver, which can be exposed if a fetch operation fails. An attacker can obtain private keys by forcing such a failure.
Note: The keys are exposed even if RequestAuthentication is in use.