TI-2021-06060 Aliases CVE-2021-23365 GHSA-599h-8wpj-75xj

Authentication bypass in github.com/TykTechnologies/tyk-identity-broker

MEDIUM 41CWE-287Published 2021-04-26 · Updated 2024-09-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

The package github.com/tyktechnologies/tyk-identity-broker before 1.1.1 are vulnerable to Authentication Bypass via the Go XML parser which can cause SAML authentication bypass. This is because the XML parser doesn’t guarantee integrity in the XML round-trip (encoding/decoding XML data).

Why it matters now

EPSS 0.01011 63rd percentileScored 2026-11-07

Fix Fixed github.com/TykTechnologies/tyk-identity-broker: 1.1.1github.com/tyktechnologies/tyk-identity-broker (Go): 1.1.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	github.com/TykTechnologies/tyk-identity-broker	before 1.1.1	1.1.1	Patch available	CNA
—	github.com/tyktechnologies/tyk-identity-broker (Go)	before 1.1.1	1.1.1	Patch available	GHSA-599h-8wpj-75xj

github.com/TykTechnologies/tyk-identity-broker Vendor— Affected before 1.1.1 Fixed in 1.1.1 Patch available CNA
github.com/tyktechnologies/tyk-identity-broker (Go) Vendor— Affected before 1.1.1 Fixed in 1.1.1 Patch available GHSA-599h-8wpj-75xj

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tyk:tyk-identity-broker::::::::	before 1.1.1	Vulnerable	Tyk

cpe:2.3:a:tyk:tyk-identity-broker:*:*:*:*:*:*:*:* Versions before 1.1.1 Vulnerable ·Tyk

Remediation

Fix · CNA github.com/TykTechnologies/tyk-identity-broker Fixed in 1.1.1
Fix · GHSA-599h-8wpj-75xj github.com/tyktechnologies/tyk-identity-broker (Go) Fixed in 1.1.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-23365
2026-10-03 Alias added: GHSA-599h-8wpj-75xj

References

Patch 3

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences