CVE-2026-87997

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Source
https://cve.org/CVERecord?id=CVE-2026-87997
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87997.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-87997
Aliases
Published
2026-09-09T21:30:09Z
Modified
2026-09-12T03:31:03Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Open WebUI: Any authenticated user can inject chats into another user's folder via chat completions
Details

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/chat/completions and POST /api/v1/chat/completions in backend/open_webui/main.py copied a client-supplied folder_id into a new chat without applying the folder write-access check used by the dedicated chat routes. An authenticated user who knew a shared folder identifier could inject an attacker-controlled chat into a folder where the user had read-only or no write access, causing the entry to appear to authorized folder readers. This issue is fixed in version 0.11.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639",
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87997.json"
}
References

Affected packages

Git / github.com/open-webui/open-webui

Affected ranges

Type
GIT
Repo
https://github.com/open-webui/open-webui
Events
Introduced
4d2e13cf2bcc451b33bb6374bea4d2163e6cc94c
Fixed
d9e23b90c100d19b00270aea3cde0501d2354a6c
Fixed
d3e8bf3405e848cfba377814d0aa7ba7290e414d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.10.0"
        },
        {
            "fixed": "0.11.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.10.0
v0.10.1
v0.10.2
v0.11.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87997.json"