# github.com/envoyproxy/envoy (Go) vulnerabilities

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

Junglewise Threat Intelligence has tracked 11 vulnerabilities in github.com/envoyproxy/envoy (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-2026-26330, was published on 10 March 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 github.com/envoyproxy/envoy (Go)

Cloud-native proxy and communication bus designed for large service-oriented architectures.

## Latest github.com/envoyproxy/envoy (Go) vulnerabilities

- [CVE-2026-26330: Envoy's global rate limit may crash when the response phase limit is enabled and the response phase request is failed…](https://junglewise.ai/threats/cve-2026-26330-envoy-s-global-rate-limit-may-crash-when-the-response-phase-limit) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2026-26311: Envoy: HTTP - filter chain execution on reset streams causing UAF crash](https://junglewise.ai/threats/cve-2026-26311-envoy-http-filter-chain-execution-on-reset-streams-causing-uaf) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2026-26309: Envoy affected by off-by-one write in JsonEscaper::escapeString()](https://junglewise.ai/threats/cve-2026-26309-envoy-affected-by-off-by-one-write-in-jsonescaper-escapestring) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2026-26308: Envoy RBAC header validation bypass via multi-value concatenation](https://junglewise.ai/threats/cve-2026-26308-envoy-rbac-header-validation-bypass-via-multi-value-concatenation) (high, CVSS 7.5, published 10 Mar 2026)
- [CVE-2026-26310: Envoy vulnerable to crash for scoped ip address during DNS](https://junglewise.ai/threats/cve-2026-26310-envoy-vulnerable-to-crash-for-scoped-ip-address-during-dns) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2025-64763: Envoy forwards early CONNECT data in TCP proxy mode](https://junglewise.ai/threats/cve-2025-64763-envoy-forwards-early-connect-data-in-tcp-proxy-mode) (low, CVSS 3.1, published 5 Dec 2025)
- [CVE-2025-66220: Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS…](https://junglewise.ai/threats/cve-2025-66220-envoy-is-a-high-performance-edge-middle-service-proxy-in-1-33-12) (medium, CVSS 5, published 3 Dec 2025)
- [CVE-2025-64527: Envoy crashes when JWT authentication is configured with the remote JWKS fetching](https://junglewise.ai/threats/cve-2025-64527-envoy-is-a-high-performance-edge-middle-service-proxy-in-1-33-12) (medium, CVSS 6.5, published 3 Dec 2025)
- [CVE-2025-54588: Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults](https://junglewise.ai/threats/cve-2025-54588-envoy-race-condition-in-dynamic-forward-proxy-leads-to-use-after) (low, CVSS 3.1, published 15 Sep 2025)
- [CVE-2025-30157: Envoy crashes when HTTP ext_proc processes local replies](https://junglewise.ai/threats/cve-2025-30157-envoy-crashes-when-http-ext-proc-processes-local-replies) (low, CVSS 3.1, published 21 Mar 2025)
- [CVE-2019-9901: EnvoyProxy Envoy Missing HTTP URL path normalization](https://junglewise.ai/threats/cve-2019-9901-envoyproxy-envoy-missing-http-url-path-normalization) (low, CVSS 3, published 24 May 2022)

## Most severe github.com/envoyproxy/envoy (Go) vulnerabilities

- [CVE-2026-26308: Envoy RBAC header validation bypass via multi-value concatenation](https://junglewise.ai/threats/cve-2026-26308-envoy-rbac-header-validation-bypass-via-multi-value-concatenation) (high, CVSS 7.5, published 10 Mar 2026)
- [CVE-2025-64527: Envoy crashes when JWT authentication is configured with the remote JWKS fetching](https://junglewise.ai/threats/cve-2025-64527-envoy-is-a-high-performance-edge-middle-service-proxy-in-1-33-12) (medium, CVSS 6.5, published 3 Dec 2025)
- [CVE-2025-66220: Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS…](https://junglewise.ai/threats/cve-2025-66220-envoy-is-a-high-performance-edge-middle-service-proxy-in-1-33-12) (medium, CVSS 5, published 3 Dec 2025)
- [CVE-2026-26311: Envoy: HTTP - filter chain execution on reset streams causing UAF crash](https://junglewise.ai/threats/cve-2026-26311-envoy-http-filter-chain-execution-on-reset-streams-causing-uaf) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2025-54588: Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults](https://junglewise.ai/threats/cve-2025-54588-envoy-race-condition-in-dynamic-forward-proxy-leads-to-use-after) (low, CVSS 3.1, published 15 Sep 2025)
- [CVE-2026-26310: Envoy vulnerable to crash for scoped ip address during DNS](https://junglewise.ai/threats/cve-2026-26310-envoy-vulnerable-to-crash-for-scoped-ip-address-during-dns) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2025-30157: Envoy crashes when HTTP ext_proc processes local replies](https://junglewise.ai/threats/cve-2025-30157-envoy-crashes-when-http-ext-proc-processes-local-replies) (low, CVSS 3.1, published 21 Mar 2025)
- [CVE-2026-26309: Envoy affected by off-by-one write in JsonEscaper::escapeString()](https://junglewise.ai/threats/cve-2026-26309-envoy-affected-by-off-by-one-write-in-jsonescaper-escapestring) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2026-26330: Envoy's global rate limit may crash when the response phase limit is enabled and the response phase request is failed…](https://junglewise.ai/threats/cve-2026-26330-envoy-s-global-rate-limit-may-crash-when-the-response-phase-limit) (low, CVSS 3.1, published 10 Mar 2026)
- [CVE-2025-64763: Envoy forwards early CONNECT data in TCP proxy mode](https://junglewise.ai/threats/cve-2025-64763-envoy-forwards-early-connect-data-in-tcp-proxy-mode) (low, CVSS 3.1, published 5 Dec 2025)

## 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, "github.com/envoyproxy/envoy (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-envoyproxy-envoy, 13 November 2026.