Incorrect Regular Expression Affecting istio-pilot-discovery-1.28-compat package, versions <1.28.6-r0
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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- published22 Aug 2026
- disclosed15 Apr 2026
Introduced: 15 Apr 2026
CVE-2026-39350 (opens in a new tab)How to fix?
Upgrade Minimos:latest istio-pilot-discovery-1.28-compat to version 1.28.6-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream istio-pilot-discovery-1.28-compat package and not the istio-pilot-discovery-1.28-compat package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Istio is an open platform to connect, manage, and secure microservices. In versions 1.25.0 through 1.27.8, 1.28.0 through 1.28.5, 1.29.0, and 1.29.1, the serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting a service account such as cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants. Fixes are available in versions 1.29.2, 1.28.6, and 1.27.9.