Red Hat Security Advisory: cockpit security update
Affects Red Hat cockpitSource GCVE Database
Not known to be exploited · CVSS 8.0 High.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 May 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 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportcockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8cockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportcockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Servicecockpit | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutionscockpit | Affected– | Fixed in– |
AI-suggested
Red Hat has released official security updates that fix this vulnerability. Users should apply the updated Cockpit packages provided in advisories RHSA-2026:21390 (for RHEL 10.0 EUS) and RHSA-2026:21392 (for RHEL 9.6 EUS) as soon as possible. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor beyond applying these patches.
Description
Cockpit enables users to administer GNU/Linux servers using a web browser. It offers network configuration, log inspection, diagnostic reports, SELinux troubleshooting, interactive command-line sessions, and more. Security Fix(es): * cockpit: Cockpit: Arbitrary command execution via crafted links in system logs UI (CVE-2026-4802) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
- access.redhat.com/errata/RHSA-2026:21390 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21392 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21394 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21395 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21468 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21515 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21516 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21647 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21676 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21700 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-4802 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2451155 (opens in a new tab)
- github.com/cockpit-project/cockpit/blob/e204cd130/pkg/systemd/logsJournal.jsx (opens in a new tab)
- openwall.com/lists/oss-security/2026/05/20/19 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4802.json (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21208-1.json (opens in a new tab)
- bugzilla.suse.com/1265040 (opens in a new tab)
- suse.com/security/cve/CVE-2026-4802/ (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21676.json (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/rhsa-2026_21392.json (opens in a new tab)
- lists.suse.com/pipermail/suse-liberty-linux-updates/2026-July/007060.html (opens in a new tab)