Is there a public exploit for CVE-2026-15588?

No public exploit for CVE-2026-15588 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-2026-15588?

CVE-2026-15588 scores CVSS 5.3 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.48%.

What does CVE-2026-15588 affect?

CVE-2026-15588 affects Red Hat Cert Manager support for Red Hat OpenShift release 1.20, Red Hat Hardened Images, Red Hat Discovery 2, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Update Infrastructure 5, Cert Manager support for Red Hat OpenShift release 1.17.

5.3 Medium

A denial-of-service and resource exhaustion vulnerability exists within the GDBus component of GLib.

CVE-2026-15588

A denial-of-service and resource exhaustion vulnerability exists within the GDBus component of GLib. The gdbusauth authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.

Assessment

CVSS: 5.3 (v3.1)
Severity: Medium
EPSS: 0.48% 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: 20 July 2026
Last updated: 5 November 2026
Affected: Red Hat · Cert Manager support for Red Hat OpenShift release 1.17 · Cert Manager support for Red Hat OpenShift release 1.18 · Cert Manager support for Red Hat OpenShift release 1.19 · Cert Manager support for Red Hat OpenShift release 1.20
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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