CVE-2022-36087 MEDIUM

CVE-2022-36087: OAuthLib vulnerable DoS when attacker provides malicious IPV6 URI

Vendor Oauthlib
Product oauthlib
Weakness CWE-20 · Input validation
Published September 9, 2022
Last update April 22, 2025

CVSS base score

5.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of `uri_validate` functions depending where it is used. OAuthLib applications using OAuth2.0 provider support or use directly `uri_validate` are affected by this issue. Version 3.2.1 contains a patch. There are no known workarounds.

Key dates

02Disclosure timeline

September 9, 2022 CVE published
April 22, 2025 Record updated