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

11 known vulnerabilities (2 high, 8 medium, 1 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://pkg.go.dev/github.com/envoyproxy/envoy

## Advisories (11)

### [CVE-2026-26330](https://cve.now/CVE-2026-26330): Envoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directly

- Severity: Medium 5.3
- Published: Mar 10, 2026
- Affected: versions 1.37.0; from 1.36.0, through 1.36.4.

### [CVE-2026-26311](https://cve.now/CVE-2026-26311): Envoy HTTP: filter chain execution on reset streams causing UAF crash

- Severity: Medium 5.9
- Published: Mar 10, 2026
- Affected: versions 1.37.0; from 1.36.0, through 1.36.4; from 1.35.0, through 1.35.8; through 1.34.12.

### [CVE-2026-26310](https://cve.now/CVE-2026-26310): Crash for scoped ip address in Envoy during DNS

- Severity: Medium 5.9
- Published: Mar 10, 2026
- Affected: versions 1.37.0; from 1.36.0, through 1.36.4; from 1.35.0, through 1.35.8; through 1.34.12.

### [CVE-2026-26309](https://cve.now/CVE-2026-26309): Envoy has an off-by-one write in JsonEscaper::escapeString()

- Severity: Medium 5.3
- Published: Mar 10, 2026
- Affected: versions 1.37.0; from 1.36.0, through 1.36.4; from 1.35.0, through 1.35.8; through 1.34.12.

### [CVE-2026-26308](https://cve.now/CVE-2026-26308): Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation

- Severity: High 7.5
- Published: Mar 10, 2026
- Affected: from 1.37.0, fixed in 1.37.1; from 1.36.0, fixed in 1.36.5; from 1.35.0, fixed in 1.35.9; fixed in 1.34.13.

### [CVE-2025-66220](https://cve.now/CVE-2025-66220): Envoy’s TLS certificate matcher for \`match\_typed\_subject\_alt\_names\` may incorrectly treat certificates containing an embedded null byte

- Severity: Medium 5.0
- Published: Dec 3, 2025
- Affected: from 1.36.0, fixed in 1.36.3; from 1.35.0, fixed in 1.35.7; from 1.34.0, fixed in 1.34.11; fixed in 1.33.13.

### [CVE-2025-64763](https://cve.now/CVE-2025-64763): Envoy forwards early CONNECT data in TCP proxy mode

- Severity: Low 3.7
- Published: Dec 3, 2025
- Affected: from 1.36.0, fixed in 1.36.3; from 1.35.0, fixed in 1.35.7; from 1.34.0, fixed in 1.34.11; fixed in 1.33.13.

### [CVE-2025-64527](https://cve.now/CVE-2025-64527): Envoy crashes when JWT authentication is configured with the remote JWKS fetching

- Severity: Medium 6.5
- Published: Dec 3, 2025
- Affected: from 1.36.0, fixed in 1.36.3; from 1.35.0, fixed in 1.35.7; from 1.34.0, fixed in 1.34.11; fixed in 1.33.13.

### [CVE-2025-54588](https://cve.now/CVE-2025-54588): Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults

- Severity: High 7.5
- Published: Sep 2, 2025
- Affected: from 1.35.0, fixed in 1.35.1; from 1.34.0, fixed in 1.34.5.

### [CVE-2025-30157](https://cve.now/CVE-2025-30157): Envoy crashes when HTTP ext\_proc processes local replies

- Severity: Medium 6.5
- Published: Mar 21, 2025
- Affected: fixed in 1.30.10; from 1.31.0, fixed in 1.31.6; from 1.32.0, fixed in 1.32.4; from 1.33.0, fixed in 1.33.1.

### [CVE-2019-9901](https://cve.now/CVE-2019-9901): Envoy 1.9.0 and before does not normalize HTTP URL paths.

- Severity: Medium 6.5
- Published: Apr 25, 2019
- Affected: fixed in 1.9.1.

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