CVE-2021-23365
Last modified
CVE-2021-23365 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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).. EPSS estimates a 1.01% chance of exploitation in the next 30 days.
Description
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tyk | Tyk-Identity-Broker | < 1.1.1 |
References
- https://github.com/TykTechnologies/tyk-identity-broker/commit/243092965b0f93a95a14cb882b5b9a3df61dd5c0Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/commit/46f70420e0911e4e8b638575e29d394c227c75d0Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/pull/147Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/releases/tag/v1.1.1Release Notes, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/commit/243092965b0f93a95a14cb882b5b9a3df61dd5c0Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/commit/46f70420e0911e4e8b638575e29d394c227c75d0Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/pull/147Patch, Third Party Advisory
- https://github.com/TykTechnologies/tyk-identity-broker/releases/tag/v1.1.1Release Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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