CVE-2026-33544
7.7 · HIGHOverview
CVE-2026-33544 is a high-severity vulnerability affecting tinyauth tinyauth. It was published on April 2, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Tinyauth is an authentication and authorization server. Prior to version 5.0.5, all three OAuth service implementations (GenericOAuthService, GithubOAuthService, GoogleOAuthService) store PKCE verifiers and access tokens as mutable struct fields on singleton instances shared across all concurrent requests. When two users initiate OAuth login for the same provider concurrently, a race condition between VerifyCode() and Userinfo() causes one user to receive a session with the other user's identity. This issue has been patched in version 5.0.5.
Remediation
Check the references section for vendor advisories and patches from tinyauth. Update tinyauth to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tinyauth | tinyauth | >= 0, < 5.0.5 | Affected |
Frequently Asked Questions
What is CVE-2026-33544?
CVE-2026-33544 is a high-severity vulnerability affecting tinyauth tinyauth. It was published on April 2, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).
How severe is CVE-2026-33544?
This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-33544?
Check the references section for vendor advisories and patches from tinyauth. Update tinyauth to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-33544?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-33544 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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