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 11 Nov 2026, 14:38 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 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7cockpit | Affected– | Fixed in– |
| Red Hat OpenShift Dev Spacesdevspaces/udi-base-rhel10 | Affected– | Fixed in– |
AI-suggested
Red Hat has released security updates for Cockpit in Red Hat Enterprise Linux 9 that address these vulnerabilities. Users should apply the provided updates as detailed in the Red Hat advisory (RHSA-2026:98463) to remediate these issues. 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 caused by improper URL-root handling and unbounded connection thread spawning, as well as an unauthenticated remote memory leak via a crafted CockpitLang cookie. Red Hat has issued an important security advisory with updates addressing these flaws.
References
- access.redhat.com/errata/RHSA-2026:98463 (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_98463.json (opens in a new tab)