SB2026110957 - Incorrect authorization in cert-manager Operator for Red Hat OpenShift

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Main Vulnerability Database SB2026110957

SB2026110957 - Incorrect authorization in cert-manager Operator for Red Hat OpenShift

Published: November 9, 2026

Security Bulletin ID SB2026110957
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Incorrect authorization (CVE-ID: CVE-2026-62290)

CWE-ID: CWE-863 - Incorrect Authorization

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a low-privileged local attacker with namespace-level Challenge creation permission to obtain platform-owned acme-dns credentials associated with a usable ClusterIssuer.

The vulnerability exists due to missing authorization validation in cert-manager's ACME Challenge controller when directly created Challenges supply solver configurations outside the referenced ClusterIssuer's policy. A low-privileged local attacker can specify an attacker-controlled acme-dns endpoint, causing the controller to send credentials from the ClusterIssuer resource namespace to that endpoint.


Remediation

Install update from vendor's website.

References