What’s Vulnerable › Vulnerabilities

CVE-2026-41413: Istio Vulnerable to SSRF via RequestAuthentication jwksUri

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-07 · updated 2026-06-17
• Weakness: CWE-918

Description

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.

Affected products

• istio: before 1.28.6; from 1.29.0 before 1.29.2 — fixed in 1.28.6, 1.29.2

How to fix

Upgrade to a fixed version: istio 1.28.6, 1.29.2. Check the vendor advisory for mitigations.

References

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

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