CVE-2026-31837
Istio JWKS resolver to prevent private key material from being exposed when JWKS fetch fails.
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a user of Istio is impacted if the JWKS resolver becomes unavailable or the fetch fails, exposing hardcoded defaults regardless of use of the RequestAuthentication resource. This vulnerability is fixed in 1.29.1, 1.28.5, and 1.27.8.
| CWE | CWE-200 |
| Vendor | istio |
| Product | istio |
| Published | Mar 10, 2026 |
| Last Updated | Mar 11, 2026 |
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Affected Versions
istio / istio
>= 1.29.0-alpha.0, < 1.29.1 >= 1.28.0-alpha.0, < 1.28.5 < 1.27.8