Authlib up to 1.6.5 FrameworkIntegration.set_state_data cross-site request forgery

Summaryinfo

A vulnerability was found in Authlib up to 1.6.5. It has been rated as problematic. This impacts the function FrameworkIntegration.set_state_data. The manipulation leads to cross-site request forgery. This vulnerability is documented as CVE-2025-68158. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Authlib up to 1.6.5 and classified as problematic. This issue affects the function FrameworkIntegration.set_state_data. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. Using CWE to declare the problem leads to CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. Impacted is integrity. The summary by CVE is:

Authlib is a Python library which builds OAuth and OpenID Connect servers. In versions 1.0.0 through 1.6.5, cache-backed state/request-token storage is not tied to the initiating user session, so CSRF is possible for any attacker that has a valid state (easily obtainable via an attacker-initiated authentication flow). When a cache is supplied to the OAuth client registry, FrameworkIntegration.set_state_data writes the entire state blob under _state_{app}_{state}, and get_state_data ignores the caller’s session altogether. This issue has been patched in version 1.6.6.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-68158 since 12/16/2025. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 282484 (Linux Distros Unpatched Vulnerability : CVE-2025-68158), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.6.6 eliminates this vulnerability. Applying the patch 2808378611dd6fb2532b189a9087877d8f0c0489 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (282484). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Authlib

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5

License

• open-source

Website

• Product: https://github.com/authlib/authlib/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion