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.
CVE-2022-36087
This medium-severity CVE scores 5.7 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.7
- EG Score
- 5.7(medium)
- EPSS
- 67.6%
- KEV
- Not listed
Published
September 9, 2022
Last Modified
November 21, 2024
References (18)
- security-advisories@githubhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
- security-advisories@githubhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- security-advisories@githubhttps://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd
- security-advisories@githubhttps://github.com/oauthlib/oauthlib/releases/tag/v3.2.1
- security-advisories@githubhttps://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7
- security-advisories@githubhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI/
- security-advisories@githubhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU/
- security-advisories@githubhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE/
- security-advisories@githubhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S/
- af854a3a-2127-422b-91ae-364da2661108https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
- af854a3a-2127-422b-91ae-364da2661108https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- af854a3a-2127-422b-91ae-364da2661108https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd
- af854a3a-2127-422b-91ae-364da2661108https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1
- af854a3a-2127-422b-91ae-364da2661108https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI/
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-oauthlib (3.2.0-1ubuntu0.1) @ jammy | 2026-05-25 | ubuntu |
| redhat | fence-agents-0:4.10.0-43.el9 | 2023-05-09 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| oauthlib | 3.1.1, 3.2.0 | 3.2.1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 10× in last 7d / 47× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-25 15:43 UTCVendor advisory
- 2026-05-24 16:51 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
Same CWE
10 shownCWE-20
Frequently asked(5)
What is CVE-2022-36087?
When was CVE-2022-36087 disclosed?
Is CVE-2022-36087 actively exploited?
What is the CVSS score of CVE-2022-36087?
How do I remediate CVE-2022-36087?
Dependency Blast Radius
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