# istio.io/istio (Go) vulnerabilities

Source: https://junglewise.ai/threats/technologies/istio-io-istio  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/istio-io-istio.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 11 vulnerabilities in istio.io/istio (Go): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-41413, was published on 7 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 11 (0 critical, 0 exploited in the wild)

## About istio.io/istio (Go)

Istio is a service mesh platform that manages traffic and security between microservices.

## Latest istio.io/istio (Go) vulnerabilities

- [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-2022-31045: Ill-formed headers may lead to unexpected behavior in Istio](https://junglewise.ai/threats/cve-2022-31045-ill-formed-headers-may-lead-to-unexpected-behavior-in-istio) (low, CVSS 3.1, published 10 Jun 2022)
- [CVE-2019-18817: Istio vulnerable to denial of service](https://junglewise.ai/threats/cve-2019-18817-istio-vulnerable-to-denial-of-service) (low, CVSS 3.1, published 24 May 2022)
- [CVE-2021-31920: Istio Authorization Bypass Vulnerability](https://junglewise.ai/threats/cve-2021-31920-istio-authorization-bypass-vulnerability) (low, CVSS 3.1, published 24 May 2022)
- [CVE-2019-14993: Istio ReDoS Vulnerability](https://junglewise.ai/threats/cve-2019-14993-istio-redos-vulnerability) (low, CVSS 3, published 24 May 2022)
- [CVE-2022-23635: Unauthenticated control plane denial of service attack in Istio](https://junglewise.ai/threats/cve-2022-23635-unauthenticated-control-plane-denial-of-service-attack-in-istio) (low, CVSS 3.1, published 23 Feb 2022)
- [CVE-2020-16844: Authorization bypass in Istio](https://junglewise.ai/threats/cve-2020-16844-authorization-bypass-in-istio) (low, CVSS 3.1, published 15 Feb 2022)
- [CVE-2019-12243: Istio may not check inbound TCP connections against istio-policy](https://junglewise.ai/threats/cve-2019-12243-istio-may-not-check-inbound-tcp-connections-against-istio-policy) (low, CVSS 3.1, published 15 Feb 2022)
- [CVE-2021-39156: Istio Fragments in Path May Lead to Authorization Policy Bypass](https://junglewise.ai/threats/cve-2021-39156-istio-fragments-in-path-may-lead-to-authorization-policy-bypass) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2021-39155: Authorization Policy Bypass Due to Case Insensitive Host Comparison](https://junglewise.ai/threats/cve-2021-39155-authorization-policy-bypass-due-to-case-insensitive-host) (low, CVSS 3.1, published 30 Aug 2021)

## Most severe istio.io/istio (Go) vulnerabilities

- [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)
- [CVE-2022-23635: Unauthenticated control plane denial of service attack in Istio](https://junglewise.ai/threats/cve-2022-23635-unauthenticated-control-plane-denial-of-service-attack-in-istio) (low, CVSS 3.1, published 23 Feb 2022)
- [CVE-2019-18817: Istio vulnerable to denial of service](https://junglewise.ai/threats/cve-2019-18817-istio-vulnerable-to-denial-of-service) (low, CVSS 3.1, published 24 May 2022)
- [CVE-2021-39155: Authorization Policy Bypass Due to Case Insensitive Host Comparison](https://junglewise.ai/threats/cve-2021-39155-authorization-policy-bypass-due-to-case-insensitive-host) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2022-31045: Ill-formed headers may lead to unexpected behavior in Istio](https://junglewise.ai/threats/cve-2022-31045-ill-formed-headers-may-lead-to-unexpected-behavior-in-istio) (low, CVSS 3.1, published 10 Jun 2022)
- [CVE-2019-12243: Istio may not check inbound TCP connections against istio-policy](https://junglewise.ai/threats/cve-2019-12243-istio-may-not-check-inbound-tcp-connections-against-istio-policy) (low, CVSS 3.1, published 15 Feb 2022)
- [CVE-2021-39156: Istio Fragments in Path May Lead to Authorization Policy Bypass](https://junglewise.ai/threats/cve-2021-39156-istio-fragments-in-path-may-lead-to-authorization-policy-bypass) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2021-31920: Istio Authorization Bypass Vulnerability](https://junglewise.ai/threats/cve-2021-31920-istio-authorization-bypass-vulnerability) (low, CVSS 3.1, published 24 May 2022)
- [CVE-2020-16844: Authorization bypass in Istio](https://junglewise.ai/threats/cve-2020-16844-authorization-bypass-in-istio) (low, CVSS 3.1, published 15 Feb 2022)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| 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 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Go technologies

- [github.com/mattermost/mattermost-server (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server): 297 vulnerabilities
- [github.com/mattermost/mattermost-server/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6): 222 vulnerabilities
- [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities
- [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities
- [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities
- [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities
- [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities
- [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities
- [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities
- [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities
- [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities
- [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 vulnerabilities

## 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.io/istio (Go) vulnerabilities", https://junglewise.ai/threats/technologies/istio-io-istio, 13 November 2026.