# Istio vulnerabilities

Source: https://junglewise.ai/threats/technologies/istio  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 12 November 2026, 00:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/istio.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Istio: 1 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-31836, was published on 9 November 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 1
- Last 30 days: 2
- Last 90 days: 2
- All time: 5 (0 critical, 0 exploited in the wild)

## About Istio

Open source service mesh platform that manages traffic, security, and observability for microservices.

## Latest Istio vulnerabilities

- [CVE-2026-31836: Istio authentication bypass or access control vulnerability](https://junglewise.ai/threats/cve-2026-31836-gcp-2026-080) (high, published 9 Nov 2026)
- [Istio and Envoy Proxy security vulnerabilities](https://junglewise.ai/threats/gcp-2026-069-6d8e440c) (info, published 19 Oct 2026)
- [CVE-2026-41413: GO-2026-5363 - Istio: SSRF via RequestAuthentication jwksUri in istio.io/istio](https://junglewise.ai/threats/cve-2026-41413-istio-ssrf-via-requestauthentication-jwksuri) (medium, CVSS 5, published 7 May 2026)
- [CVE-2026-39350: Istio AuthorizationPolicy regex injection in serviceAccounts](https://junglewise.ai/threats/cve-2026-39350-istio-authorizationpolicy-regex-injection-in-serviceaccounts) (medium, CVSS 5.4, published 16 Apr 2026)
- [CVE-2026-31837: Istio JWKS resolver failure exposes hardcoded default keys](https://junglewise.ai/threats/cve-2026-31837-istio-jwks-resolver-failure-exposes-hardcoded-default-keys) (high, CVSS 7.5, published 10 Mar 2026)

## Most severe Istio vulnerabilities

- [CVE-2026-31837: Istio JWKS resolver failure exposes hardcoded default keys](https://junglewise.ai/threats/cve-2026-31837-istio-jwks-resolver-failure-exposes-hardcoded-default-keys) (high, CVSS 7.5, published 10 Mar 2026)
- [CVE-2026-31836: Istio authentication bypass or access control vulnerability](https://junglewise.ai/threats/cve-2026-31836-gcp-2026-080) (high, published 9 Nov 2026)
- [CVE-2026-39350: Istio AuthorizationPolicy regex injection in serviceAccounts](https://junglewise.ai/threats/cve-2026-39350-istio-authorizationpolicy-regex-injection-in-serviceaccounts) (medium, CVSS 5.4, published 16 Apr 2026)
- [CVE-2026-41413: GO-2026-5363 - Istio: SSRF via RequestAuthentication jwksUri in istio.io/istio](https://junglewise.ai/threats/cve-2026-41413-istio-ssrf-via-requestauthentication-jwksuri) (medium, CVSS 5, published 7 May 2026)
- [Istio and Envoy Proxy security vulnerabilities](https://junglewise.ai/threats/gcp-2026-069-6d8e440c) (info, published 19 Oct 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 1 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 1 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Istio vulnerabilities", https://junglewise.ai/threats/technologies/istio, 12 November 2026.