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PYSEC-2022-269
Vulnerability from pysec - Published: 2022-09-09 21:15 - Updated: 2022-09-15 06:38
VLAI
Details
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.
Impacted products
| Name | purl | oauthlib | pkg:pypi/oauthlib |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "oauthlib",
"purl": "pkg:pypi/oauthlib"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2e40b412c844ecc4673c3fa3f72181f228bdbacd"
}
],
"repo": "https://github.com/oauthlib/oauthlib",
"type": "GIT"
},
{
"events": [
{
"introduced": "3.1.1"
},
{
"fixed": "3.2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.1.1",
"3.2.0"
]
}
],
"aliases": [
"CVE-2022-36087",
"GHSA-3pgj-pg6c-r5p7"
],
"details": "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.",
"id": "PYSEC-2022-269",
"modified": "2022-09-15T06:38:55.424021Z",
"published": "2022-09-09T21:15:00Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "ADVISORY",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "FIX",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
}
]
}
BREW-S3QL-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:33 – Updated: 2026-09-10 01:10 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "s3ql",
"purl": "pkg:brew/s3ql"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-s3ql-CVE-2022-36087",
"modified": "2026-09-10T01:10:54Z",
"published": "2026-08-13T17:33:32Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
BREW-SCOUTSUITE-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:34 – Updated: 2026-09-10 01:11 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
| URL | Type | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "scoutsuite",
"purl": "pkg:brew/scoutsuite"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.14.0_16"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-scoutsuite-CVE-2022-36087",
"modified": "2026-09-10T01:11:31Z",
"published": "2026-08-13T17:34:19Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
BREW-SICKCHILL-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:34 – Updated: 2026-09-10 01:12 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
| URL | Type | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "sickchill",
"purl": "pkg:brew/sickchill"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2024.3.1_7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-sickchill-CVE-2022-36087",
"modified": "2026-09-10T01:12:53Z",
"published": "2026-08-13T17:34:39Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
BREW-SNAPCRAFT-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:35 – Updated: 2026-09-10 20:54 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
| URL | Type | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "snapcraft",
"purl": "pkg:brew/snapcraft"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-snapcraft-CVE-2022-36087",
"modified": "2026-09-10T20:54:16Z",
"published": "2026-08-13T17:35:45Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
BREW-TWARC-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:44 – Updated: 2026-09-10 01:31 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
| URL | Type | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "twarc",
"purl": "pkg:brew/twarc"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.14.1_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-twarc-CVE-2022-36087",
"modified": "2026-09-10T01:31:48Z",
"published": "2026-08-13T17:44:53Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
BREW-VDIRSYNCER-CVE-2022-36087 (GHSA-3PGJ-PG6C-R5P7)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:46 – Updated: 2026-09-10 01:32 – Source website
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
References
| URL | Type | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "oauthlib",
"resource_purl": "pkg:pypi/oauthlib@3.3.1",
"upstream_fixed_in": "3.2.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "vdirsyncer",
"purl": "pkg:brew/vdirsyncer"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.20.0_8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/oauthlib@3.3.1",
"name": "oauthlib",
"resource": "oauthlib",
"strategy": "registry",
"subject_version": "3.3.1"
}
]
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "BREW-vdirsyncer-CVE-2022-36087",
"modified": "2026-09-10T01:32:33Z",
"published": "2026-08-13T17:46:47Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI",
"upstream": [
"GHSA-3pgj-pg6c-r5p7",
"CVE-2022-36087",
"PYSEC-2022-269"
]
}
CVE-2022-36087 (GCVE-0-2022-36087)
Vulnerability from cvelistv5 – Published: 2022-09-09 00:00 – Updated: 2025-04-22 17:22
VLAI
EPSS
VEX
Title
OAuthLib vulnerable DoS when attacker provides malicious IPV6 URI
Summary
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.
Severity
5.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-22 15:44 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/oauthlib/oauthlib/security/adv… | |
| https://github.com/oauthlib/oauthlib/commit/2e40b… | |
| https://github.com/oauthlib/oauthlib/blob/2b8a448… | |
| https://github.com/oauthlib/oauthlib/blob/d4bafd9… | |
| https://github.com/oauthlib/oauthlib/releases/tag… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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GHSA-3PGJ-PG6C-R5P7
Vulnerability from github – Published: 2022-09-16 21:02 – Updated: 2024-10-07 16:52
VLAI
Summary
OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI
Details
Impact
- Attacker providing malicious redirect uri can cause DoS to oauthlib's web application.
- Attacker can also leverage usage of
uri_validatefunctions depending where it is used.
What kind of vulnerability is it? Who is impacted?
Oauthlib applications using OAuth2.0 provider support or use directly uri_validate function.
Patches
Has the problem been patched? What versions should users upgrade to?
Issue fixed in 3.2.2 release.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
The redirect_uri can be verified in web toolkit (i.e bottle-oauthlib, django-oauth-toolkit, ...) before oauthlib is called. A sample check if : is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.
References
Attack Vector:
- Attacker providing malicious redirect uri:
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232
- Vulnerable uri_validate functions:
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
PoC
is_absolute_uri("http://[:::::::::::::::::::::::::::::::::::::::]/path")
Acknowledgement
Special thanks to Sebastian Chnelik - PyUp.io
Severity
5.7 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "oauthlib"
},
"ranges": [
{
"events": [
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"introduced": "3.1.1"
},
{
"fixed": "3.2.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-36087"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-601"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-16T21:02:52Z",
"nvd_published_at": "2022-09-09T21:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n- Attacker providing malicious redirect uri can cause DoS to oauthlib\u0027s web application.\n- Attacker can also leverage usage of `uri_validate` functions depending where it is used.\n\n_What kind of vulnerability is it? Who is impacted?_\n\nOauthlib applications using OAuth2.0 provider support or use directly `uri_validate` function.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nIssue fixed in 3.2.2 release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe `redirect_uri` can be verified in web toolkit (i.e `bottle-oauthlib`, `django-oauth-toolkit`, ...) before oauthlib is called. A sample check if `:` is present to reject the request can prevent the DoS, assuming no port or IPv6 is fundamentally required.\n\n### References\nAttack Vector:\n- Attacker providing malicious redirect uri:\nhttps://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232\n- Vulnerable `uri_validate` functions:\nhttps://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py\n\n### PoC\n```python\nis_absolute_uri(\"http://[:::::::::::::::::::::::::::::::::::::::]/path\")\n```\n\n### Acknowledgement\nSpecial thanks to Sebastian Chnelik - PyUp.io",
"id": "GHSA-3pgj-pg6c-r5p7",
"modified": "2024-10-07T16:52:33Z",
"published": "2022-09-16T21:02:52Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36087"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd"
},
{
"type": "PACKAGE",
"url": "https://github.com/oauthlib/oauthlib"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232"
},
{
"type": "WEB",
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/oauthlib/PYSEC-2022-269.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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