CVE-2026-67336 in better-authinformation

Résumé

par MITRE • 01/08/2026

better-auth versions before 1.6.11 contain insecure cryptographic defaults in the oidcProvider and mcp plugins that advertise the none algorithm and accept plain PKCE by default. Attackers can exploit algorithm negotiation to accept unsigned tokens or intercept authorization codes when PKCE plain is used instead of the required S256 method.

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Responsable

VulnCheck

Réserver

29/07/2026

Divulgation

01/08/2026

Modérer

accepté

Entrée

VDB-385296

CPE

prêt

EPSS

0.00000

KEV

non

Activités

faible

Sources

MITREhttps://www.cve.org/CVERecord?id=CVE-2026-67336
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-67336
CVE Detailshttps://www.cvedetails.com/cve/CVE-2026-67336/

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