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High severity7.5NVD Advisory· Published Mar 10, 2026· Updated Jul 20, 2026

CVE-2026-31837

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

3
  • Istio/Istio3 versions
    cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*range: <1.27.8
    • (no CPE)range: <1.29.1, <1.28.5, <1.27.8
    • (no CPE)range: >= 1.29.0-alpha.0, < 1.29.1

Patches

Vulnerability mechanics

References

8

News mentions

0

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