CVE-2026-41413
highPriorität · verfolgen · 31EPSS 0.003 · 26. PerzentilEUUSEPSS · bewertet 2026-10-27
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.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.7
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (5)
Betroffene Produkte und Versionsbereiche.
Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-fgw5-hp8f-xfhcIstio: SSRF via RequestAuthentication jwksUri2026-04-16ghsa · osvUS
### Impact 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. Note: a partial mitigation for this was released in 1.29.1, 128.5, and 1.27.8; however, it was incomplete and missed a few codepaths. 1.29.2 and 1.28.6 contain the more robust fix. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds Users can deploy a `ValidatingAdmissionPolicy` to prevent the creation of `RequestAuthentication` resources with suspicious jwksUri field values (e.g. localhost, 127.0.0.0/8, 169.254.0.0/16, the ipv6 variants, etc.). ### References None
- GO-2026-5363Istio: SSRF via RequestAuthentication jwksUri in istio.io/istio2026-06-25vendor · osvUS
Istio: SSRF via RequestAuthentication jwksUri in istio.io/istio
auch bekannt als (4)
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quellen
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Referenzen (8)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/istio/istio/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-41413cnnvd
- https://github.com/istio/istio/releases/tag/1.28.6enisa_euvd
- https://github.com/istio/istio/releases/tag/1.29.2enisa_euvd
- https://github.com/istio/istio/security/advisories/GHSA-fgw5-hp8f-xfhcenisa_euvd
- https://github.com/istio/istio/releases/tag/1.28.6Release Notesnvd
- https://github.com/istio/istio/releases/tag/1.29.2Release Notesnvd
- https://github.com/istio/istio/security/advisories/GHSA-fgw5-hp8f-xfhcMitigationVendor Advisorynvd
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