CVE-2026-39350mediumCWE-185CWE-863

CVE-2026-39350: fallo de gravedad media en istio

Istio AuthorizationPolicy Incorrect Regex Matching of Dots in serviceAccounts Fields Allows Policy Bypass

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear istio+ Monitorear istio.io/istio

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.4epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Productos afectados
istio · istio
CVEs relacionadas — istio

En el mismo producto, de las más peligrosas a las menos.

CVE-2022-23635HIGHUnauthenticated control plane denial of service attack in IstioEPSS 1.7%CVE-2022-24726HIGHUnauthenticated control plane denial of service attack in IstioEPSS 1.6%CVE-2022-39278HIGHIstio vulnerable to denial of service attack due to Golang Regex LibraryEPSS 1.4%CVE-2021-39155HIGHAuthorization Policy Bypass Due to Case Insensitive Host ComparisonEPSS 1.2%CVE-2022-31045HIGHIll-formed headers may lead to unexpected behavior in IstioEPSS 1.2%CVE-2021-39156HIGHFragments in Path May Lead to Authorization Policy BypassEPSS 1.2%