Skip to main content
CVE-2026-91150VulnerabilityPublished

Cockpit. This vulnerability · Unthrottled Resource Allocation

Source GCVE Database

0
Compare
Authoritative record:CVE-2026-91150· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 11 Nov 2026, 22:32 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 11 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 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10cockpitAffected–Fixed in–
Red Hat Enterprise Linux 7cockpitAffected–Fixed in–
Red Hat Enterprise Linux 8cockpitAffected–Fixed in–
Red Hat Enterprise Linux 9cockpitAffected–Fixed in–
Red Hat OpenShift Dev Spacesdevspaces/udi-base-rhel10Affected–Fixed in–
Red Hat OpenShift Dev Spacesdevspaces/udi-base-rhel9Affected–Fixed in–

AI-suggested

Red Hat has published an advisory for this vulnerability. The advisory indicates the issue is important and under active investigation or fix development. Users should monitor Red Hat's official channels for updates and apply fixes once available. No alternative mitigations are specified in the advisory.

Description

A vulnerability in Cockpit's cockpit-ws service allows unauthenticated remote attackers to send specially crafted fragmented WebSocket messages that accumulate without a size limit, causing unbounded memory exhaustion and denial of service. This flaw affects remote management services commonly exposed on Red Hat Enterprise Linux systems. The vulnerability has a high severity rating with a CVSS score of 7.5. No specific affected versions are provided in the data. Red Hat has acknowledged the issue and provided advisory information.

References

Community reviews

Loading reviews…