better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass (CVE-2026-67331) | HOL Guard CVE

High · CVSS 8.3CVE-2026-67331

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

Answer in brief

CVE-2026-67331 records a High severity (CVSS 8.3) vulnerability in better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass. The current sources do not mark it as known exploited. The current feed maps better-auth/scim (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 1, 2026Updated Sep 8, 2026Source checked Sep 29, 2026First seen by HOL Aug 3, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps better-auth/scim (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
better-auth/scimgeneric	>=1.5.0 <1.7.0-beta.4	1.7.0-beta.4

Recommended response

Check inventory. Check lockfiles and deployed manifests for better-auth/scim.
Review the reported fix. Update better-auth/scim to 1.7.0-beta.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 3, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.