CVE-2026-88000

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Source
https://cve.org/CVERecord?id=CVE-2026-88000
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88000.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-88000
Aliases
Published
2026-09-09T21:35:25Z
Modified
2026-09-12T03:30:51Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Open WebUI: Any authenticated user can hang the server via message deletion in a cyclic chat tree
Details

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/chats/{id}/messages/{message_id} used the chat-history deletion helper in backend/open_webui/models/chats.py to follow childrenIds without recording visited message identifiers. An authenticated user could store a cyclic chat tree and delete a message, causing a synchronous infinite loop on the server request loop that blocked every user's requests until the process was killed. This issue is fixed in version 0.11.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88000.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
b933292d63d12be3fd1416fe55519ddc7aa336bc
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-2026-88000.json"