{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-87016",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-08T16:44:23.783Z",
        "datePublished": "2026-09-09T21:21:43.877Z",
        "dateUpdated": "2026-09-14T13:43:30.787Z"
    },
    "containers": {
        "cna": {
            "title": "Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-155",
                            "lang": "en",
                            "description": "CWE-155: Improper Neutralization of Wildcards or Matching Symbols",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.1,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7"
                },
                {
                    "name": "https://github.com/open-webui/open-webui/pull/28624",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/open-webui/open-webui/pull/28624"
                },
                {
                    "name": "https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80"
                },
                {
                    "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": ">= 0.6.41, < 0.11.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-09T21:21:43.877Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, get_user_by_oauth_sub and get_user_by_scim_external_id in backend/open_webui/models/users.py used JSON contains matching that compiled to SQL LIKE substring matching on SQLite. An OAuth subject containing percent or underscore wildcard characters could resolve to a different stored identity, potentially selecting an administrator account and issuing the attacker that account's session; PostgreSQL deployments were not affected. This issue is fixed in version 0.11.1."
                }
            ],
            "source": {
                "advisory": "GHSA-wpmr-8h3q-fwj7",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-14T13:43:02.743594Z",
                                "id": "CVE-2026-87016",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-14T13:43:30.787Z"
                }
            }
        ]
    }
}