---
title: "envoyproxy github.com/envoyproxy/envoy vulnerabilities and CVEs"
url: https://radicalnotion.ai/vendor/envoyproxy/github-com-envoyproxy-envoy
type: product
description: "envoyproxy github.com/envoyproxy/envoy has 11 published CVEs, 0 in CISA KEV and 7 with public exploits."
updated: 2026-03-10
source: RadicalNotion.AI
license: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
---

# envoyproxy github.com/envoyproxy/envoy vulnerabilities

Vendor: [envoyproxy](https://radicalnotion.ai/vendor/envoyproxy)

- **Published CVEs:** 11
- **In CISA KEV:** 0
- **With a public exploit:** 7
- **With a patch:** 11
- **Average CVSS:** 7.1
- **First CVE:** 2019-04-25
- **Latest CVE:** 2026-03-10
- **Ecosystems:** golang

## Severity breakdown

| Severity | CVEs |
| --- | --- |
| Critical | 1 |
| High | 6 |
| Medium | 4 |
| Low | 0 |
| Unscored | 0 |

## Most common weakness types

| CWE | Name | CVEs |
| --- | --- | --- |
| [CWE-416](https://radicalnotion.ai/cwe/cwe-416) | Use After Free | 3 |
| [CWE-193](https://radicalnotion.ai/cwe/cwe-193) | Off-by-one Error | 1 |
| [CWE-20](https://radicalnotion.ai/cwe/cwe-20) | Improper Input Validation | 1 |
| [CWE-460](https://radicalnotion.ai/cwe/cwe-460) | Improper Cleanup on Thrown Exception | 1 |
| [CWE-476](https://radicalnotion.ai/cwe/cwe-476) | NULL Pointer Dereference | 1 |
| [CWE-693](https://radicalnotion.ai/cwe/cwe-693) | Protection Mechanism Failure | 1 |
| [CWE-706](https://radicalnotion.ai/cwe/cwe-706) | Use of Incorrectly-Resolved Name or Reference | 1 |
| [CWE-170](https://radicalnotion.ai/cwe/cwe-170) | Improper Null Termination | 1 |

## CVEs by year

| Year | CVEs published |
| --- | --- |
| 2019 | 1 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 5 |
| 2026 | 5 |

## Affected versions (top 24 of 34)

| Version | Kind | CVEs |
| --- | --- | --- |
| 1.36.0 \<= v \<= 1.36.4 | range | 4 |
| 1.37.0 | range | 4 |
| \< 1.33.13 | range | 3 |
| \<= 1.34.12 | range | 3 |
| 1.34.0 \<= v \< 1.34.11 | range | 3 |
| 1.35.0 \<= v \< 1.35.7 | range | 3 |
| 1.35.0 \<= v \<= 1.35.8 | range | 3 |
| 1.36.0 \<= v \< 1.36.3 | range | 3 |
| \< 1.30.10 | range | 1 |
| \< 1.34.13 | range | 1 |
| \< 1.9.1 | range | 1 |
| 1.31.0 \<= v \< 1.31.6 | range | 1 |
| 1.33.13 | patched | 3 |
| 1.34.11 | patched | 3 |
| 1.35.7 | patched | 3 |
| 1.36.3 | patched | 3 |
| 1.30.10 | patched | 1 |
| 1.31.6 | patched | 1 |
| 1.32.4 | patched | 1 |
| 1.33.1 | patched | 1 |
| 1.34.13 | patched | 1 |
| 1.34.5 | patched | 1 |
| 1.35.1 | patched | 1 |
| 1.35.9 | patched | 1 |

## CVEs

| CVE | Title | Severity | CVSS | CISA KEV | Public exploit | Patch |
| --- | --- | --- | --- | --- | --- | --- |
| CVE-2026-26330 | Envoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directly | high | 7.5 | No | No | Yes |
| CVE-2026-26311 | Envoy HTTP: filter chain execution on reset streams causing UAF crash | medium | 5.9 | No | Yes | Yes |
| CVE-2026-26310 | Crash for scoped ip address in Envoy during DNS | high | 7.5 | No | Yes | Yes |
| CVE-2026-26309 | Envoy has an off-by-one write in JsonEscaper::escapeString() | medium | 5.3 | No | Yes | Yes |
| CVE-2026-26308 | Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation | high | 8.2 | No | Yes | Yes |
| CVE-2025-66220 | Envoy’s TLS certificate matcher for \`match\_typed\_subject\_alt\_names\` may incorrectly treat certificates containing an embedded null byte | high | 7.1 | No | Yes | Yes |
| CVE-2025-64763 | Envoy forwards early CONNECT data in TCP proxy mode | medium | 5.3 | No | No | Yes |
| CVE-2025-64527 | Envoy crashes when JWT authentication is configured with the remote JWKS fetching | medium | 6.5 | No | Yes | Yes |
| CVE-2025-54588 | Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults | high | 7.5 | No | No | Yes |
| CVE-2025-30157 | Envoy crashes when HTTP ext\_proc processes local replies | high | 7.5 | No | Yes | Yes |
| CVE-2019-9901 | EnvoyProxy Envoy Missing HTTP URL path normalization | critical | 10.0 | No | No | Yes |

## Frequently asked questions

### How many CVEs does envoyproxy github.com/envoyproxy/envoy have?

envoyproxy github.com/envoyproxy/envoy has 11 published CVE records since 2019.

### How many envoyproxy github.com/envoyproxy/envoy CVEs are in CISA KEV?

None of envoyproxy github.com/envoyproxy/envoy's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

### Are there public exploits for envoyproxy github.com/envoyproxy/envoy vulnerabilities?

Yes — 7 of envoyproxy github.com/envoyproxy/envoy's CVEs have a known public exploit.

### Which versions of envoyproxy github.com/envoyproxy/envoy are affected?

34 distinct envoyproxy github.com/envoyproxy/envoy versions are named across its CVEs. Use the version filter above to see the CVEs affecting a specific version.

### What are the most common weakness types in envoyproxy github.com/envoyproxy/envoy CVEs?

envoyproxy github.com/envoyproxy/envoy's CVEs most often map to these CWE weakness types: CWE-416 (Use After Free), CWE-193 (Off-by-one Error), CWE-20 (Improper Input Validation), CWE-460 (Improper Cleanup on Thrown Exception).

### How many critical envoyproxy github.com/envoyproxy/envoy vulnerabilities are there?

envoyproxy github.com/envoyproxy/envoy has 1 critical and 6 high-severity CVEs.

### What is the average severity of envoyproxy github.com/envoyproxy/envoy CVEs?

The average CVSS base score across envoyproxy github.com/envoyproxy/envoy's scored CVEs is 7.1.

## Other products from this vendor

- [envoy](https://radicalnotion.ai/vendor/envoyproxy/envoy) (128 CVEs)
- [gateway](https://radicalnotion.ai/vendor/envoyproxy/gateway) (10 CVEs)
- [github.com/envoyproxy/gateway](https://radicalnotion.ai/vendor/envoyproxy/github-com-envoyproxy-gateway) (10 CVEs)
- [envoy-setec](https://radicalnotion.ai/vendor/envoyproxy/envoy-setec) (1 CVEs)

---

Source: [RadicalNotion.AI](https://radicalnotion.ai/vendor/envoyproxy/github-com-envoyproxy-envoy). Licensed CC BY-NC 4.0; attribute RadicalNotion.AI and link the source page when you reuse this data.