CVE-2026-109346

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Source

https://cve.org/CVERecord?id=CVE-2026-109346

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109346.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-109346

Aliases

GHSA-q84f-53jg-9ppm

Published

2026-10-12T16:05:30Z

Modified

2026-10-13T02:46:58Z

Severity

8.5 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

better-auth 1.3.8-beta.3 before 1.7.0-rc.3 Device Authorization Phishing via /device

Details

better-auth from 1.3.8-beta.3 before 1.7.0-rc.3 contains a UI misrepresentation vulnerability in the deviceAuthorization plugin because GET /device omits the requesting client_id and scope. Attackers can start a device request via /device/code, trick signed-in users into approving the code, then redeem it at /device/token for a live session token.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-451"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109346.json"
}

References

Affected packages

Git / github.com/better-auth/better-auth

Affected ranges

Type

GIT

Repo

https://github.com/better-auth/better-auth

Events

Introduced

6bb27e160c1ca2fa7aacef880d553b9bb9670e16

Fixed

8bb588dde21a00c6159d0a58dd4b007b1059f596

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "1.3.8-beta.3"
        },
        {
            "fixed":  "1.7.0-rc.3"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109346.json"