Red Hat Security Advisory: cockpit security update
Affects Red Hat cockpitSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High.
Data as of 4 Nov 2026, 04:46 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 19 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 3 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7cockpit | Affected– | Fixed in– |
| Red Hat OpenShift Dev Spacesdevspaces/udi-base-rhel10 | Affected– | Fixed in– |
| Red Hat OpenShift Dev Spacesdevspaces/udi-base-rhel9 | Affected– | Fixed in– |
AI-suggested
Red Hat has released updated packages for Cockpit in Red Hat Enterprise Linux 9 that fix these vulnerabilities. Users should apply the security updates as described in the Red Hat advisory RHSA-2026:94533 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.
Description
Multiple security vulnerabilities have been identified in the Cockpit web-based server administration tool used in Red Hat Enterprise Linux 9. These include denial of service issues due to URL-root handling and unbounded connection thread spawning, as well as an unauthenticated remote memory leak via the CockpitLang cookie. Red Hat has issued an important security advisory with updates to address these issues.
References
- access.redhat.com/errata/RHSA-2026:94533 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2479230 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2479422 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2519497 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_94533.json (opens in a new tab)