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Istio

1.29.10Networking & Messaging
Oct 22, 2026

CHECK 4

A security release removes trust in compromised eMudhra certificate authorities and updates certificate validation in `ztunnel`. Istio 1.29 does not contain the Go fix for `CVE-2026-111943`; that fix is available in Istio 1.30.7 and 1.31.3.

Check if affected (4)

  • securityIstio 1.29 end of life

    Applies if Istio 1.29 runs.

    Istio 1.29 reached end of life on October 15, 2026. This release includes the end-of-life status under ISTIO-SECURITY-2026-008.

  • securityTrust in compromised eMudhra intermediate CA certificates, removed

    Applies if you use ubuntu-based images or distroless images.

    Trust in the compromised eMudhra intermediate CA certificates was removed. The CA bundle in ubuntu-based and distroless images no longer includes emSign ECC Root CA - G3, as covered by ISTIO-SECURITY-2026-008.

  • securityThe rustls-webpki version in ztunnel, updated

    Applies if ztunnel runs.

    rustls-webpki in ztunnel was updated to 0.103.16. It rejects certificate chains containing any of the compromised eMudhra intermediate keys, as covered by ISTIO-SECURITY-2026-008.

  • securityThe Go fix for CVE-2026-111943, absent from Istio 1.29

    Applies if Istio 1.29 runs.

    Istio 1.29 does not include the Go fix for CVE-2026-111943 because it is built with Go 1.25, which no longer receives fixes. istiod, istioctl, and pilot-agent rely on the updated CA bundle only; Istio 1.30.7 or 1.31.3 includes the Go fix.

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