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VulnerabilityPublished

CVE-2026-107123: Uncontrolled Resource Consumption

Source GCVE Database

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Authoritative record:CVE-2026-107123· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 5 Nov 2026, 19:47 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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-servicesAffected–Fixed in–
Red Hat Build of Keycloakrhbk/keycloak-rhel9Affected–Fixed in–
Red Hat Single Sign-On 7keycloak-servicesAffected–Fixed in–

AI-suggested

Currently, no effective mitigation or patch is available that meets Red Hat's criteria for ease of deployment and applicability. Users should monitor vendor advisories for updates. No workaround or temporary fix is provided by Red Hat at this time.

Description

A vulnerability in Keycloak's SAML XML processing allows an unauthenticated remote attacker to cause high CPU usage by sending specially crafted SAML requests with excessively long dateTime or duration values. This leads to a denial of service (DoS) condition affecting all users. The flaw arises from improper validation of these string lengths before XML parsing.

References

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