CVE-2026-89060

Stolostron/multicluster-observability-addon: cross-namespace secret disclosure in multicluster-observability-addon via unvalidated configuration references

HIGH
7.7
CVSS Score
Published: September 11, 2026 at 04:22 AM UTC
Updated: September 21, 2026 at 12:17 PM UTC
Products not identified yet

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Severity
HIGH7.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A flaw was found in multicluster-observability-addon. This vulnerability allows a managed-cluster identity to reference configuration resources outside its designated namespace. This can lead to the disclosure of sensitive hub Secrets to an attacker-controlled managed cluster.

Affected

We have no canonical product record for this CVE. The source names may not have matched any product.

References (8)

VDB Entryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-89060
Issue Trackingx_refsource_REDHAT
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2531596
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:67539
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:67540
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:67541
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:67542
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:67543

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.7HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-551

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