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CVE-2026-34969

Nhost Nhost/auth information disclosure

7.5 HIGHPublic exploitEPSS 0.37%
  1. Published6 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Nhost Nhost/auth< 0.48.0

Remediation

Fixed in
Nhost Nhost/auth≥ 0.48.0

References

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Frequently asked

Is CVE-2026-34969 being actively exploited?

CVE-2026-34969 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.37%.

How severe is CVE-2026-34969?

CVE-2026-34969 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2026-34969?

Affected products include Nhost Nhost/auth.

How do I fix CVE-2026-34969?

Upgrade affected software to a fixed version, for example Nhost Nhost/auth 0.48.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-34969 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.