CVE-2026-70482

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Source
https://cve.org/CVERecord?id=CVE-2026-70482
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70482.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70482
Aliases
Published
2026-08-04T19:51:58.168Z
Modified
2026-08-12T03:51:27.590146299Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Open WebUI: Account takeover via OAuth token exchange accepting tokens issued to any client
Details

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.0, when ENABLEOAUTHTOKEN_EXCHANGE=True, /oauth/{provider}/token/exchange accepts a raw provider access token and validates it by calling the provider userinfo endpoint without confirming which OAuth client the token was issued to. Anyone holding an access token minted for any client registered with the same provider could exchange it for an Open WebUI session as that token user, including applications the operator does not control and has never authorized. This issue is fixed in 0.11.0.

Database specific 
{
    "cwe_ids": [
        "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70482.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://github.com/open-webui/open-webui
Events
Introduced
7a7a25766c3dc13fa85544a93d011e00b7c0b2b4
Fixed
b190dcf3caa00dc8b7b9c7312828298d9143f60d
Fixed
c4332be71e6e9c314e8a13b9d2819a6932561630
Fixed
f9590b8017199e56d5e953657e6498e3cef1d246
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.8.0"
        },
        {
            "fixed": "0.11.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.10.0
v0.10.1
v0.10.2
v0.8.0
v0.8.1
v0.8.10
v0.8.11
v0.8.12
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v0.8.7
v0.8.8
v0.8.9
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v0.9.4
v0.9.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70482.json"