vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2022-39388

Istio may allow identity impersonation if user has localhost access

LOW
3.5
CVSS Score
Published: November 10, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:58 AM UTC
1 product affected across 1 vendorIstio

Using istio by istio?

Get instant alerts when new vulnerabilities affect istio - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
LOW3.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Istio is an open platform to connect, manage, and secure microservices. In versions on the 1.15.x branch prior to 1.15.3, a user can impersonate any workload identity within the service mesh if they have localhost access to the Istiod control plane. Version 1.15.3 contains a patch for this issue. There are no known workarounds.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Istio· Istio
95%
v < 1.15.31.15.0 ≤ v ≤ 1.15.2
Affected range stops below 1.15.3, so it looks safe — our inference, not a vendor statement

References (4)

PatchThird Party Advisory
Source: [email protected]
https://github.com/istio/istio/commit/346260e5115e9fbc65ba8a559bc686e6ca046a32
PatchThird Party Advisory
Source: [email protected]
https://github.com/istio/istio/commit/9a643e270421560afb2630e00f76d46a55499df9
Third Party Advisory
Source: [email protected]
https://github.com/istio/istio/security/advisories/GHSA-6c6p-h79f-g6p4
Release NotesVendor Advisory
Source: [email protected]
https://istio.io/latest/news/releases/1.15.x/announcing-1.15.3/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOW[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card