Is there a public exploit for CVE-2026-91147?

No public exploit for CVE-2026-91147 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-91147?

CVE-2026-91147 scores CVSS 5.9 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.4%.

What does CVE-2026-91147 affect?

CVE-2026-91147 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

5.9 Medium

A flaw was found in cockpit-ws.

CVE-2026-91147

A flaw was found in cockpit-ws. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the WebService.UrlRoot is configured and a request is made to the exact URL-root prefix without a trailing slash, cockpit-ws can terminate unexpectedly. This issue leads to the unavailability of the Cockpit web service.

Assessment

CVSS: 5.9 (v3.1)
Severity: Medium
EPSS: 0.4% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 18 September 2026
Last updated: 4 November 2026
Affected: Red Hat · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 9
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

At the source

EUVD (ENISA)

References

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