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CVE-2026-94218— Keycloak-services: keycloak-services: 2fa setup enforcement bypass via authentication session restart endpoint

Quick assessment

Affected

Red Hat Red Hat Build of Keycloak

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Keycloak（一种身份和访问管理解决方案）的身份验证会话管理中发现了漏洞。该问题发生在管理员通过客户端策略强制实施更强的身份验证流程（例如强制设置双因素认证（2FA））时。用户在登录过程中手动访问特定的会话重启 Web 链接即可绕过该要求。此操作会清除用于跟踪所需安全步骤的内部标记，从而使用户仅使用密码即可登录，而无需完成强制的 2FA 设置。

CVSS 3.1 · Low EPSS 0.31% · P24 Updated Sep 21, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

Vendor	Product	Version Range	Status
Red Hat	Red Hat Build of Keycloak	`any`	affected
		`any`	affected
		`any`	affected
Red Hat	Red Hat Single Sign-On 7	`any`	unaffected

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Vulnerability Information

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Vulnerability Title

Keycloak-services: keycloak-services: 2fa setup enforcement bypass via authentication session restart endpoint

Source: CVE Program / CVE List V5

Vulnerability Description

A flaw was found in the authentication session management of Keycloak, an identity and access management solution. The issue occurs when an administrator enforces a stronger authentication flow, such as mandatory two-factor authentication (2FA) setup, through a client policy. A user can bypass this requirement by manually visiting a specific session restart web link during the login process. This action clears the internal markers that track the required security steps, allowing the user to log in with only a password and gain access without completing the mandated 2FA setup.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE
Red Hat	Red Hat Build of Keycloak	-	`cpe:/a:redhat:build_keycloak:`
Red Hat	Red Hat Build of Keycloak	-	`cpe:/a:redhat:build_keycloak:`
Red Hat	Red Hat Build of Keycloak	-	`cpe:/a:redhat:build_keycloak:`
Red Hat	Red Hat Single Sign-On 7	-	`cpe:/a:redhat:red_hat_single_sign_on:7`

II. Public POCs for CVE-2026-94218

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-94218

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Vendor Advisories for CVE-2026-94218 (1)

🔗 CVE-2026-94218 - Red Hat Customer Portal vdb-entry x_refsource_REDHAT

https://www.cve.org/CVERecord?id=CVE-2026-94218

Same Patch Batch · Red Hat · 2026-09-21 · 12 CVEs total

CVE-2026-80110	8.1 HIGH	Pki-core: dogtag pki v2 rest acl filter's reverse-lexicographic tie-break lets a ca agent
CVE-2026-15801	8.0 HIGH	Cri-o: cri-o: insufficient validation during container checkpoint restore
CVE-2026-94449	7.5 HIGH	Quarkus-smallrye-fault-tolerance: quarkus-smallrye-fault-tolerance: memory leak in @applyg
CVE-2026-75939	7.4 HIGH	Openshift/oc-mirror: release signature verification: openpgp signatureerror checked before
CVE-2026-94368	7.1 HIGH	Noobaa-core: noobaa-core: presigned put url escalation to copyobject via unsigned x-amz-co
CVE-2026-94215	5.5 MEDIUM	Keycloak-services: keycloak-services: cross-realm client read/write via request-level cach
CVE-2026-93433	5.5 MEDIUM	Libstoragemgmt: libstoragemgmt: denial of service via stack buffer overflow in scsi vpd pa
CVE-2026-94184	5.3 MEDIUM	Fetchmail: fetchmail: stack-based buffer overflow in ntlm authentication (fetchmail-sa-202
CVE-2026-94213	4.9 MEDIUM	Keycloak-services: keycloak-services: authorization services policy evaluation endpoint le
CVE-2026-92382	4.1 MEDIUM	Usbredir: usbredir: unbounded iso_packet_desc[] index in usbredirhost_iso_packet() leads t
CVE-2026-94217	3.5 LOW	Keycloak-services: keycloak-services: uma scope merge across resource owners via resource

IV. Related Vulnerabilities

Same product: Red Hat Build of Keycloak

Same vendor: Red Hat

Same weakness: CWE-862