150 lines
6.3 KiB
JSON
150 lines
6.3 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-87011",
|
|
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "GitHub_M",
|
|
"dateReserved": "2026-09-08T16:44:23.783Z",
|
|
"datePublished": "2026-09-09T20:54:26.207Z",
|
|
"dateUpdated": "2026-09-14T13:42:35.435Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"title": "Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-405",
|
|
"lang": "en",
|
|
"description": "CWE-405: Asymmetric Resource Consumption (Amplification)",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-770",
|
|
"lang": "en",
|
|
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"attackComplexity": "LOW",
|
|
"attackVector": "NETWORK",
|
|
"availabilityImpact": "HIGH",
|
|
"baseScore": 7.5,
|
|
"baseSeverity": "HIGH",
|
|
"confidentialityImpact": "NONE",
|
|
"integrityImpact": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"userInteraction": "NONE",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"version": "3.1"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"name": "https://github.com/open-webui/open-webui/security/advisories/GHSA-3g9q-v48f-hh9w",
|
|
"tags": [
|
|
"x_refsource_CONFIRM"
|
|
],
|
|
"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-3g9q-v48f-hh9w"
|
|
},
|
|
{
|
|
"name": "https://github.com/open-webui/open-webui/commit/aeda6ff13a25d3b3ba1b303609f35382db22142c",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/open-webui/open-webui/commit/aeda6ff13a25d3b3ba1b303609f35382db22142c"
|
|
},
|
|
{
|
|
"name": "https://github.com/open-webui/open-webui/releases/tag/v0.11.1",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/open-webui/open-webui/releases/tag/v0.11.1"
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "open-webui",
|
|
"product": "open-webui",
|
|
"versions": [
|
|
{
|
|
"version": ">= 0.9.0, < 0.11.1",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"shortName": "GitHub_M",
|
|
"dateUpdated": "2026-09-09T20:54:26.207Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/open_webui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout token. Each request repeated uncached network fetches, and the signing-key lookup blocked the async event loop, so requests carrying invalid tokens could stall the single-worker instance and amplify traffic to the identity provider when ENABLE_OAUTH_BACKCHANNEL_LOGOUT was enabled. This issue is fixed in version 0.11.1."
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "GHSA-3g9q-v48f-hh9w",
|
|
"discovery": "UNKNOWN"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-3g9q-v48f-hh9w",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-09-14T13:41:36.439676Z",
|
|
"id": "CVE-2026-87011",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"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": "2026-09-14T13:42:35.435Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |