{"cve":"CVE-2022-36087","nvd":{"published":"2022-09-09T21:15:08.477","modified":"2026-06-17T04:52:53.517","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-601","CWE-20"],"references":["https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py","https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232","https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd","https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1","https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"],"products":["fedoraproject:fedora","oauthlib_project:oauthlib"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-36087","score":0.01672,"percentile":0.76822,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3pgj-pg6c-r5p7","url":"https://osv.dev/vulnerability/GHSA-3pgj-pg6c-r5p7","summary":"OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI","modified":"2024-10-07T17:04:39.169086Z","packages":[{"ecosystem":"PyPI","name":"oauthlib","purl":"pkg:pypi/oauthlib","ranges":[">=3.1.1 <3.2.2"],"fixed":["3.2.2"]}]},{"id":"PYSEC-2022-269","url":"https://osv.dev/vulnerability/PYSEC-2022-269","summary":"","modified":"2023-11-08T04:10:00.371667Z","packages":[{"ecosystem":"PyPI","name":"oauthlib","purl":"pkg:pypi/oauthlib","ranges":[">=3.1.1 <3.2.1"],"fixed":["3.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}