CVE-2026-41413CWE-918

Istio Vulnerable to SSRF via RequestAuthentication jwksUri

Medium · published May 7, 2026

CVSS v3.1
5.0
EPSS
0%
Percentile
37.9
In the wild
Unconfirmed
What it is

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 that URL without filtering out localhost or link local ips. This can result in sensitive data being distributed to Envoy proxies via xDS configuration. This issue has been patched in versions 1.28.6 and 1.29.2.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00447 · 37.9th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-05-07T04:18Z
EPSS history
Timeline
  • 07 MAY 04:18Z
    Istio Vulnerable to SSRF via RequestAuthentication jwksUri
    cvelistv5