CVE-2026-35091

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.2 / 10

Vector String

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

Vulnerability Description

A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents. This vulnerability affects Corosync when running in totemudp/totemudpu mode, which is the default configuration.

Vulnerability Details

Published Date

April 01, 2026

Last Modified

April 07, 2026

CWE ID

CWE-253

Source

NVD

Vendor

Red Hat

Product

Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4

External References

https://access.redhat.com/security/cve/CVE-2026-35091
https://bugzilla.redhat.com/show_bug.cgi?id=2453169
https://bugzilla.redhat.com/show_bug.cgi?id=2453813

CVE-2026-35091

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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