TI-2025-30696 Aliases CVE-2025-48370 GHSA-8r88-6cj9-9fh5

auth-js Vulnerable to Insecure Path Routing from Malformed User Input

LOW 21CWE-22Published 2025-05-27 · Updated 2026-07-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

auth-js is an isomorphic Javascript library for Supabase Auth. Prior to version 2.70.0, the library functions getUserById, deleteUser, updateUserById, listFactors and deleteFactor did not require the user supplied values to be valid UUIDs. This could lead to a URL path traversal, resulting in the wrong API function being called. Implementations that follow security best practice and validate user controlled inputs, such as the userId are not affected by this. This issue has been patched in version 2.70.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00902 59th percentileScored 2026-11-07

Fix Fixed auth-js (supabase): 2.70.0@supabase/auth-js (npm): 2.70.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
supabase	auth-js	before 2.70.0	2.70.0	Patch available	CNA
—	@supabase/auth-js (npm)	before 2.70.0	2.70.0	Patch available	GHSA-8r88-6cj9-9fh5

auth-js Vendorsupabase Affected before 2.70.0 Fixed in 2.70.0 Patch available CNA
@supabase/auth-js (npm) Vendor— Affected before 2.70.0 Fixed in 2.70.0 Patch available GHSA-8r88-6cj9-9fh5

Remediation

Fix · CNA auth-js (supabase) Fixed in 2.70.0
Fix · GHSA-8r88-6cj9-9fh5 @supabase/auth-js (npm) Fixed in 2.70.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-48370
2026-10-03 Alias added: GHSA-8r88-6cj9-9fh5

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-48370

Other 4

TI-2024-16040 Supabase PostgreSQL v15.1 was discovered to contain a SQL injection vulnerability via the… CVSS 3.1CRITICAL 9.8
TI-2026-44468 Supabase Realtime: Incorrect Authorization CVSS 3.1MEDIUM 6.5
TI-2026-24366 Supabase Auth has insecure Apple and Azure authentication with ID tokens CVSS 3.1MEDIUM 4.8
TI-2026-79331 Expired JWTs accepted by Supabase Realtime REST broadcast endpoints CVSS 3.1LOW 3.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences