Cross-site Request Forgery (CSRF) Affecting authlib package, versions [,1.6.6)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-AUTHLIB-14908840
- published9 Jan 2026
- disclosed8 Jan 2026
- creditDavid Borș (Snyk Security Research)
Introduced: 8 Jan 2026
CVE-2025-68158 (opens in a new tab)How to fix?
Upgrade authlib to version 1.6.6 or higher.
Overview
authlib is a library in building OAuth and OpenID Connect servers.
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) due to the improper validation of the request.scope in the validate_authorization_request() function which leads to cache-backed state/request-token storage not being tied to the initiating user session. An attacker can gain unauthorized access to sensitive account information by tricking a logged-in user into performing a crafted GET request containing an attacker-controlled state value and grant code, which results in the attacker's account being linked to the victim's account.