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vuln-cve/data/2026/88xxx/CVE-2026-88002.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-88002",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-09T19:19:27.406Z",
"datePublished": "2026-09-09T21:40:06.412Z",
"dateUpdated": "2026-09-14T18:41:05.853Z"
},
"containers": {
"cna": {
"title": "Open WebUI: Any authenticated user can hang the server via a cyclic chat message history",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"lang": "en",
"description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/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-jqhh-cjmq-vmv6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-jqhh-cjmq-vmv6"
},
{
"name": "https://github.com/open-webui/open-webui/pull/28034",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/open-webui/open-webui/pull/28034"
},
{
"name": "https://github.com/open-webui/open-webui/commit/5c79ccc9e5c9efc2bc024d8f0b9757652ece929a",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/open-webui/open-webui/commit/5c79ccc9e5c9efc2bc024d8f0b9757652ece929a"
},
{
"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": ">= 0.5.0, < 0.11.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-09T21:40:06.412Z"
},
"descriptions": [
{
"lang": "en",
"value": "Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.1, the message-chain reconstruction helper in backend/open_webui/utils/misc.py advanced through a chat history by map key but tracked visited entries using each message body's optional id field. An authenticated user could store id-less messages in a parent cycle and trigger a non-terminating walk that blocked the async event loop, grew memory until termination, and remained persistent across process restarts. This issue is fixed in version 0.11.1."
}
],
"source": {
"advisory": "GHSA-jqhh-cjmq-vmv6",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-14T17:12:17.083962Z",
"id": "CVE-2026-88002",
"options": [
{
"Exploitation": "none"
},
{
"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": "2026-09-14T18:41:05.853Z"
}
}
]
}
}