Casdoor up to 2.362.0 Email Address getExistUserByBindingRule EmailVerified authentication spoofing

Summaryinfo

A vulnerability, which was classified as critical, was found in Casdoor up to 2.362.0. Affected is the function getExistUserByBindingRule of the component Email Address Handler. The manipulation of the argument EmailVerified results in authentication spoofing. This vulnerability is identified as CVE-2026-9092. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Casdoor up to 2.362.0. Affected is the function getExistUserByBindingRule of the component Email Address Handler. The manipulation of the argument EmailVerified with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Casdoor versions 2.362.0 and earlier contain a vulnerability involving unverified email binding that may enable account takeover. The getExistUserByBindingRule function matches users by email without checking the email_verified claim from upstream providers; the idp.UserInfo struct does not even include a EmailVerified field. An attacker can supply an unverified email claim from an upstream provider to take over accounts that use the same email address.

The advisory is shared for download at kb.cert.org. This vulnerability is traded as CVE-2026-9092 since 05/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/28/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• Casdoor

Version

• 2.362

CPE 2.3info

• 🔒

CPE 2.2info

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