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CVE-2026-93999VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Open Source · Keycloak: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik Open SourceSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-93999· Medium 4.2

Not known to be exploited · CVSS 4.2 Medium.

Data as of 9 Nov 2026, 13:34 UTC

CVSS 3.1 base score
4.2Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.2
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundleAffected–Fixed in–
Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9Affected–Fixed in–
Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9-operatorAffected–Fixed in–
Red Hat build of Keycloak 26.6.8keycloak/rhbk-openshift-rhel9Affected–Fixed in–
Red Hat build of Keycloak 26.6.8keycloak-servicesAffected–Fixed in–
Red Hat build of Keycloak 26.6.8rhbk/keycloak-rhel9Affected–Fixed in–

AI-suggested

Red Hat states that mitigation options are either unavailable or do not meet criteria for ease of use, applicability, or stability. Users should monitor vendor advisories for updates and consider the risk of enabling client policies enforcing 2FA for users not yet enrolled.

Description

A vulnerability in Keycloak's authentication session management allows bypassing mandatory two-factor authentication (2FA) setup enforced by client policy. By visiting a specific session restart endpoint during login, a user can clear internal markers tracking required security steps and log in with only a password. This flaw requires a specific server-side configuration and affects only users not yet enrolled in 2FA. The vulnerability is rated low severity by Red Hat.

References

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