PT-2026-29832 · Nhost · Nhost

0Xkakash1 · Published 2026-04-01 · Updated 2026-04-06 · CVE-2026-34969

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Nhost versions prior to 0.48.0

Description: Nhost's auth service OAuth provider callback flow includes the refresh token directly in the redirect URL as a query parameter. This can lead to exposure of the refresh token in browser history, server access logs, HTTP Referer headers, and proxy/CDN logs. The refresh token is one-time use, and these leak vectors are on infrastructure or services integrated by the application developer. The vulnerable code is located in services/auth/go/controller/sign in provider callback get.go within the signinProviderProviderCallback function (lines 257-261), where the refresh token is added as a query parameter to the redirect URL. The issue affects all OAuth provider flows (GitHub, Google, Apple, etc.).

Recommendations: Update to version 0.48.0 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-598

CWE-200

Related Identifiers

CVE-2026-34969

GHSA-G2QJ-PRGH-4G9R

Affected Products

Nhost

References · 6

• 🔥 https://github.com/nhost/nhost/security/advisories/GHSA-g2qj-prgh-4g9r · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-34969 · Security Note
• https://osv.dev/vulnerability/GHSA-g2qj-prgh-4g9r · Vendor Advisory
• https://github.com/nhost/nhost · Note
• https://twitter.com/CVEnew/status/2041223984897741142 · Twitter Post
• https://docs.nhost.io/products/auth/pkce · Note