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VulnerabilityPublished

CVE-2026-19688: Improper Authentication

Source GCVE Database

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Authoritative record:CVE-2026-19688· Medium 6.8

Not known to be exploited · CVSS 6.8 Medium.

Data as of 6 Nov 2026, 07:33 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.8
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 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 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Build of Keycloakkeycloak-servicesAffected–Fixed in–
Red Hat Build of Keycloakrhbk-openshift-rhel9/rhbk-openshift-rhel9Affected–Fixed in–
Red Hat Single Sign-On 7keycloak-servicesAffected–Fixed in–

AI-suggested

Red Hat has assessed this vulnerability as moderate severity. Until a fix is available, organizations should avoid allowing administrators to log into potentially compromised clients and monitor for updates from Red Hat. Customers with Red Hat Technical Account Managers can review this CVE directly with their TAM for tailored guidance.

Description

A vulnerability in the Admin REST API of Keycloak allows an attacker operating a client within a realm to capture and reuse an administrator's access token. This is due to the Admin API failing to verify the intended audience of bearer tokens during authentication. Exploitation can lead to unauthorized administrative actions and potentially full realm compromise.

References

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