Istio vulnerabilities
We track 8 vulnerabilities in Istio products. 8 are rated high or critical, and none are known to be exploited. The most recent was published on May 7, 2026.
Latest Istio vulnerabilities
- 7.7 High severity
istio: Server-Side Request Forgery
Istio is an open platform to connect, manage, and secure microservices. Prior to versions 1.28.6 and 1.29.2, when a RequestAuthentication resource is created with a jwksUri pointing to an internal service, istiod makes an unauthenticated HTTP GET request to th
- 7.5 High severity
istio: Exposure of Sensitive Information to an Unauthorized Actor
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 RequestAu
- 7.5 High severity
istio: Uncontrolled Resource Consumption
Istio is an open platform-independent service mesh that provides traffic management, policy enforcement, and telemetry collection. Prior to versions 1.15.2, 1.14.5, and 1.13.9, the Istio control plane, istiod, is vulnerable to a request processing error, allow
- 9.8 Critical severity
istio: Out-of-bounds Read
Istio is an open platform to connect, manage, and secure microservices. In affected versions ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing. Users are most likely at r
- 7.5 High severity
istio: Uncontrolled Resource Consumption
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the
- 7.5 High severity
istio: Improper Validation of Specified Quantity in Input
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in t
- 8.8 High severity
istio: Incorrect Authorization
Istio is an open platform to connect, manage, and secure microservices. In versions 1.12.0 and 1.12.1 Istio is vulnerable to a privilege escalation attack. Users who have `CREATE` permission for `gateways.gateway.networking.k8s.io` objects can escalate this pr
- 9.8 Critical severity
istio: Always-Incorrect Control Flow Implementation
Istio is an open platform to connect, manage, and secure microservices. In Istio 1.12.0 and 1.12.1 The authorization policy with hosts and notHosts might be accidentally bypassed for ALLOW action or rejected unexpectedly for DENY action during the upgrade from