VYPR
← All advisories
Unrated severityNVD Advisory· Published Mar 10, 2026· Updated Mar 11, 2026

Istio JWKS resolver to prevent private key material from being exposed when JWKS fetch fails.

CVE-2026-31837

Description

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.

Affected products

2
  • Istio/Istiollm-fuzzy2 versions
    <1.27.8 || (>=1.28.0 <1.28.5) || (>=1.29.0 <1.29.1)+ 1 more
    • (no CPE)range: <1.27.8 || (>=1.28.0 <1.28.5) || (>=1.29.0 <1.29.1)
    • (no CPE)range: >= 1.29.0-alpha.0, < 1.29.1

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.