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vuln-cve/data/2026/49xxx/CVE-2026-49264.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-49264",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-28T14:33:01.180Z",
"datePublished": "2026-10-13T15:48:40.102Z",
"dateUpdated": "2026-10-16T22:04:46.619Z"
},
"containers": {
"cna": {
"title": "OAuthLib: Unsafe JSONP callback injection in RevocationEndpoint allows arbitrary JavaScript response generation",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-hj66-6f7g-4r5v",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-hj66-6f7g-4r5v"
},
{
"name": "https://github.com/oauthlib/oauthlib/pull/951",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/oauthlib/oauthlib/pull/951"
},
{
"name": "https://github.com/oauthlib/oauthlib/commit/c888359f3c42bec235b2c5caab2069c9ed62457c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/oauthlib/oauthlib/commit/c888359f3c42bec235b2c5caab2069c9ed62457c"
},
{
"name": "https://github.com/oauthlib/oauthlib/releases/tag/v4.0.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/oauthlib/oauthlib/releases/tag/v4.0.0"
}
],
"affected": [
{
"vendor": "oauthlib",
"product": "oauthlib",
"versions": [
{
"version": ">= 0.6.1, < 4.0.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-10-13T15:48:40.102Z"
},
"descriptions": [
{
"lang": "en",
"value": "OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 0.6.1 until 4.0.0, OAuthLib's RevocationEndpoint in oauthlib/oauth2/rfc6749/endpoints/revocation.py reflects an unvalidated callback request parameter into success and error response bodies when enable_jsonp=True. The callback can come from the query string or request body and is used without restricting it to a legal JavaScript function name. A browser application that loads the revocation response as trusted JSONP and permits attacker influence over callback can therefore execute attacker-controlled JavaScript in the including application's origin, with access to its DOM and script-accessible data. The feature is disabled by default, so only deployments that explicitly enable JSONP are affected. This issue is fixed in version 4.0.0."
}
],
"source": {
"advisory": "GHSA-hj66-6f7g-4r5v",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/oauthlib/oauthlib/security/advisories/GHSA-hj66-6f7g-4r5v",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-10-16T22:04:19.260810Z",
"id": "CVE-2026-49264",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-16T22:04:46.619Z"
}
}
]
}
}