better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass
Published Aug 1, 2026
8.7
HIGHCVSS 4.0
EPSS 0.39%
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.
Affected products
-
- Version 1.5.0StatusaffectedConstraints<1.7.0-beta.4
- Version 1.7.0-beta.4StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Better-Auth | Scim | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
@better-auth/scim
npm
Introduced 1.5.0 Fixed 1.7.0-beta.4
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @better-auth/scim | 1.5.0 | 1.7.0-beta.4 |
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Aug 3, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.39% (0.00388) | 30.49th | v5 (v2026.06.15) |
| Aug 2, 2026 | 0.24% (0.00240) | 15.19th | v5 (v2026.06.15) |
References (2)
- https://github.com/better-auth/better-auth/security/advisories/GHSA-j8v8-g9cx-5qf4 exploitvendor-advisory
- https://www.vulncheck.com/advisories/better-auth-scim-before-beta-4-authorization-bypass third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/better-auth/better-auth/security/advisories/GHSA-j8v8-g9cx-5qf4 | exploitvendor-advisory | |
| https://www.vulncheck.com/advisories/better-auth-scim-before-beta-4-authorization-bypass | third-party-advisory |
Change history (0)
No recorded changes yet.