Nhost is an open source Firebase alternative with GraphQL. Prior to 0.48.0, the auth service's OAuth provider callback flow places the refresh token directly into the redirect URL as a query parameter. Refresh tokens in URLs are logged in browser history, server access logs, HTTP Referer headers, and proxy/CDN logs. Note that the refresh token is one-time use and all of these leak vectors are on owned infrastructure or services integrated by the application developer. This vulnerability is fixed in 0.48.0.
History

Wed, 22 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Nhost nhost\/auth
CPEs cpe:2.3:a:nhost:nhost\/auth:*:*:*:*:*:*:*:*
Vendors & Products Nhost nhost\/auth
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 07 Apr 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Nhost
Nhost nhost
Vendors & Products Nhost
Nhost nhost

Mon, 06 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Description Nhost is an open source Firebase alternative with GraphQL. Prior to 0.48.0, the auth service's OAuth provider callback flow places the refresh token directly into the redirect URL as a query parameter. Refresh tokens in URLs are logged in browser history, server access logs, HTTP Referer headers, and proxy/CDN logs. Note that the refresh token is one-time use and all of these leak vectors are on owned infrastructure or services integrated by the application developer. This vulnerability is fixed in 0.48.0.
Title Nhost Leaks the Refresh Token via URL Query Parameter in OAuth Provider Callback
Weaknesses CWE-200
CWE-598
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-06T16:01:10.174Z

Updated: 2026-04-07T16:00:25.296Z

Reserved: 2026-03-31T19:38:31.616Z

Link: CVE-2026-34969

cve-icon Vulnrichment

Updated: 2026-04-07T15:47:28.542Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-06T16:16:38.457

Modified: 2026-04-22T20:16:14.793

Link: CVE-2026-34969

cve-icon Redhat

No data.