#VU126313 Cross-site request forgery in authlib
Published: April 16, 2026
Vulnerability identifier: #VU126313
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
authlib
authlib
Software vendor:
Authlib
Authlib
Description
The vulnerability allows a remote attacker to perform cross-site request forgery and bind an attacker's account to a victim's session.
The vulnerability exists due to cross-site request forgery in OAuth integrations using the cache feature when handling OAuth callback requests with cached state. A remote attacker can send a crafted redirect URL to the victim to perform cross-site request forgery and bind an attacker's account to a victim's session.
User interaction is required for the victim to complete the authorization flow.
Remediation
Install security update from vendor's website.