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Vulnerabilities

Security fix · CVE-2025-48370

auth-js is an isomorphic Javascript library for Supabase Auth.

Published May 27, 2025 · catalog updated Jul 27, 2026 · auth-js is an isomorphic

Check if you run it

No confirmed exploitation is on record for CVE-2025-48370. EPSS is 0.86%. Act only if a listed version of auth-js is an isomorphic is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (auth-js is an isomorphic).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.86%
Remediation
Version ranges on file
Affected products
vendor supabase auth-js < 2.70.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor supabase auth-js < 2.70.0< 2.70.0

How to fix CVE-2025-48370

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-48370. EPSS is 0.86%. Act only if a listed version of auth-js is an isomorphic is installed.

Which versions are affected?

Compare what you have installed with supabase auth-js < 2.70.0 < 2.70.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.86%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 27, 2025 · EUVD

    Detected

    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

  2. Jul 27, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-48370

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-48370

    30-day exploitation probability 0.9%

    first.org
  • EUVDVulnerability recordEUVD-2025-16354

    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,

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.