CVE-2026-41413

MEDIUM 5.0

Istio Vulnerable to SSRF via RequestAuthentication jwksUri

CVSS Score

5.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	istio
Product	istio
Published	May 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

istio / istio

< 1.28.6 >= 1.29.0-alpha.0, < 1.29.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/istio/istio/security/advisories/GHSA-fgw5-hp8f-xfhc github.com: https://github.com/istio/istio/releases/tag/1.28.6 github.com: https://github.com/istio/istio/releases/tag/1.29.2