CVE-2026-67331: better-auth SCIM versions from 1.5.0 before 1.7.0-beta.4 fail to bind non-organization SCIM providers to their creator by default, allowing authenticated users to manage other user
better-auth SCIM versions from 1.5.0 before 1.7.0-beta.4 fail to bind non-organization SCIM providers to their creator by default, allowing authenticated users to manage other users' providers. Attackers can regenerate SCIM bearer tokens, invalidate legitimate tokens, and authenticate to SCIM API routes with the attacker-controlled token.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-67331
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-67331 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for better-auth SCIM
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- lowCVE-2026-67334: better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admi…nvd · 2026-08-01
- criticalCVE-2026-67330: @better-auth/scim (a better-auth plugin) versions >= 1.4.0-beta.27 through = 1.7.0-beta.0 thro…nvd · 2026-08-01
- highGHSA-j8v8-g9cx-5qf4: @better-auth/scim: Account/provider takeover via missing owner binding on non-org SCIM pr…ghsa · 2026-07-07
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