High 8.3Published Aug 1, 2026

CVE-2026-67331better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass

Updated under an hour ago (2026-10-19 08:40 UTC)

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It affects better-auth scim. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

better-auth scim better_auth:scim (from the name)	from 1.5.0 before 1.7.0-beta.4; 1.7.0-beta.4 not affected	CNA record

References

https://github.com/better-auth/better-auth/security/advisories/GHSA-j8v8-g9cx-5qf4vendor-advisory
https://www.vulncheck.com/advisories/better-auth-scim-before-beta-4-authorization-bypassthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.