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VulnerabilityPublished

CVE-2026-92855: Improper Authentication

Source GCVE Database

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Authoritative record:CVE-2026-92855· High 7.4

Not known to be exploited · CVSS 7.4 High.

Data as of 5 Nov 2026, 19:35 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 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/rhbk-openshift-rhel9Affected–Fixed in–
Red Hat Build of Keycloakkeycloak-servicesAffected–Fixed in–
Red Hat Build of Keycloakrhbk/keycloak-rhel9Affected–Fixed in–
Red Hat Single Sign-On 7keycloak-servicesAffected–Fixed in–

AI-suggested

Red Hat states that no mitigation is currently available or meets their criteria for ease of use, applicability, and stability. Users should monitor Red Hat advisories for future patches or mitigations. Until a fix is released, organizations should consider additional protective measures around assertion transport security to reduce interception risk.

Description

A vulnerability in the SAML identity broker component of Keycloak allows an attacker to replay a valid signed assertion without possessing the associated private key, leading to unauthorized access and user impersonation. The flaw stems from the broker's failure to verify proof of key possession for holder-of-key assertions. Exploitation requires intercepting a valid signed assertion. No patch or mitigation meeting Red Hat's criteria is currently available.

References

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