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VULNERABILITIES

CVE-2026-66795 Details

Description

A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specifically by not inspecting the signer name or decoding the PEM-encoded x509 CSR. This vulnerability allows a privileged service account on a spoke cluster to submit a malicious CSR. Successful exploitation can lead to privilege escalation, enabling the attacker to obtain administrative credentials on the hub cluster.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.9 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:59556 [email protected]
https://access.redhat.com/errata/RHSA-2026:59557 [email protected]
https://access.redhat.com/errata/RHSA-2026:59558 [email protected]
https://access.redhat.com/errata/RHSA-2026:59559 [email protected]
https://access.redhat.com/errata/RHSA-2026:59579 [email protected]

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-295Improper Certificate Validation[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-66795
NVD Published Date:
Aug 17, 2026
NVD Last Modified:
Sep 8, 2026
Source:
[email protected]
CVE-2026-66795 Details - Not Deferred