CVE-2022-29226

Trivial authentication bypass in Envoy

10.0 CriticalFix available

Envoy is a cloud-native high-performance proxy. In versions prior to 1.22.1 the OAuth filter implementation does not include a mechanism for validating access tokens, so by design when the HMAC signed cookie is missing a full authentication flow should be triggered. However, the current implementation assumes that access tokens are always validated thus allowing access in the presence of any access token attached to the request. Users are advised to upgrade. There is no known workaround for this issue.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

1.35%Up 0.5 points since Jun 10, 2022

What each source reports

CVE List Score used 10.0

Trivial authentication bypass in Envoy

Record: CVE-2022-29226
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-306
Updated: 2026-11-02

EUVDEUVD-2022-33588 10.0

Record: EUVD-2022-33588
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-02

NVD 10.0

Record: CVE-2022-29226
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0: 6.4 MediumAV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness: CWE-306
Updated: 2026-11-02

OSV 10.0

Trivial authentication bypass in Envoy

Record: CVE-2022-29226
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-306
Updated: 2026-11-02

OSVRHSA-2022:5004 10.0

Red Hat Security Advisory: Red Hat OpenShift Service Mesh 2.1.3 security update

Record: RHSA-2022:5004
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-02

OSVBIT-envoy-2022-29226 No score

Trivial authentication bypass in Envoy

Record: BIT-envoy-2022-29226
Updated: 2026-11-02

Affected products

envoyproxy envoy

Affected packages

Affected packages
Package	Affected	Fixed
`envoy` Bitnami	before 1.22.1	1.22.1
`servicemesh` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-cni` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-operator` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-2.el8	0:2.1.3-2.el8
`servicemesh-pilot-agent` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-pilot-discovery` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-prometheus` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.23.0-7.el8	0:2.23.0-7.el8
`servicemesh-proxy` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-proxy-debuginfo` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-proxy-debugsource` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-proxy-wasm` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8
`servicemesh-ratelimit` Red Hat:service_mesh:2.1::el8 From an advisory covering 8 CVEs	before 0:2.1.3-1.el8	0:2.1.3-1.el8

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-29226 is a critical vulnerability (CVSS 10.0) in Envoyproxy Envoy, published June 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.35%, the 71st percentile. Fixed in envoy 1.22.1.

References

Show 41 moreShow less