Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.1
The cert-manager Operator for Red Hat OpenShift 1. 18. 1 introduces certificate authorities and certificates as first-class Kubernetes API resources, enabling certificate management within clusters. A security advisory (RHSA-2026:0981) addresses multiple vulnerabilities including CVE-2025-61729, CVE-2025-66471, and CVE-2026-21441 affecting this operator. The advisory notes a high severity level but does not provide CVSS scores or detailed exploit information. No known exploits are reported in the wild. The update process depends on the operator's installation approval policy: automatic upgrades occur by default, while manual approval is required if configured. No explicit patch or fix details are provided in the advisory content, but upgraded images are available. Users should ensure all prior relevant errata are applied before upgrading. The vendor provides documentation for upgrade procedures and recommends following those steps accordingly.
AI Analysis
Technical Summary
The cert-manager Operator for Red Hat OpenShift extends Kubernetes by managing certificate authorities and certificates as native API resources, facilitating certificates-as-a-service within Kubernetes clusters. Multiple vulnerabilities identified by CVE-2025-61729, CVE-2025-66471, and CVE-2026-21441 affect version 1.18.1 of this operator. Red Hat issued security advisory RHSA-2026:0981 describing these issues with a high severity rating but without CVSS metrics or detailed technical exploit descriptions. The advisory indicates that upgrades to newer operator images address these vulnerabilities, with upgrade mechanisms depending on the configured approval policy (automatic or manual). No known active exploitation has been reported. Users are advised to apply all relevant prior errata and follow Red Hat's documented upgrade procedures to remediate the vulnerabilities.
Potential Impact
The vulnerabilities affect the cert-manager Operator for Red Hat OpenShift 1.18.1 and related images, potentially impacting the security of certificate management within Kubernetes clusters. The advisory classifies the issues as high severity but does not specify exact impacts or exploitation details. No known exploits are reported in the wild. The vulnerabilities could affect the integrity or availability of certificate services in the cluster environment, but the absence of detailed impact data limits precise assessment.
Mitigation Recommendations
Red Hat provides upgraded operator images to address these vulnerabilities. If the cert-manager Operator's installation approval policy is set to 'Automatic' (the default), the operator will upgrade automatically with no user action required. If set to 'Manual', administrators must approve the upgrade manually following Red Hat's documented procedures. Before upgrading, ensure all previously released relevant errata are applied. Users should consult the official Red Hat documentation at https://docs.openshift.com/container-platform/latest/security/cert_manager_operator/index.html for detailed upgrade instructions. Since no explicit patch files or fixes are listed, following the upgrade process as described by Red Hat is the recommended remediation. Monitor Red Hat advisories for any further updates.
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.1
Description
The cert-manager Operator for Red Hat OpenShift 1. 18. 1 introduces certificate authorities and certificates as first-class Kubernetes API resources, enabling certificate management within clusters. A security advisory (RHSA-2026:0981) addresses multiple vulnerabilities including CVE-2025-61729, CVE-2025-66471, and CVE-2026-21441 affecting this operator. The advisory notes a high severity level but does not provide CVSS scores or detailed exploit information. No known exploits are reported in the wild. The update process depends on the operator's installation approval policy: automatic upgrades occur by default, while manual approval is required if configured. No explicit patch or fix details are provided in the advisory content, but upgraded images are available. Users should ensure all prior relevant errata are applied before upgrading. The vendor provides documentation for upgrade procedures and recommends following those steps accordingly.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The cert-manager Operator for Red Hat OpenShift extends Kubernetes by managing certificate authorities and certificates as native API resources, facilitating certificates-as-a-service within Kubernetes clusters. Multiple vulnerabilities identified by CVE-2025-61729, CVE-2025-66471, and CVE-2026-21441 affect version 1.18.1 of this operator. Red Hat issued security advisory RHSA-2026:0981 describing these issues with a high severity rating but without CVSS metrics or detailed technical exploit descriptions. The advisory indicates that upgrades to newer operator images address these vulnerabilities, with upgrade mechanisms depending on the configured approval policy (automatic or manual). No known active exploitation has been reported. Users are advised to apply all relevant prior errata and follow Red Hat's documented upgrade procedures to remediate the vulnerabilities.
Potential Impact
The vulnerabilities affect the cert-manager Operator for Red Hat OpenShift 1.18.1 and related images, potentially impacting the security of certificate management within Kubernetes clusters. The advisory classifies the issues as high severity but does not specify exact impacts or exploitation details. No known exploits are reported in the wild. The vulnerabilities could affect the integrity or availability of certificate services in the cluster environment, but the absence of detailed impact data limits precise assessment.
Mitigation Recommendations
Red Hat provides upgraded operator images to address these vulnerabilities. If the cert-manager Operator's installation approval policy is set to 'Automatic' (the default), the operator will upgrade automatically with no user action required. If set to 'Manual', administrators must approve the upgrade manually following Red Hat's documented procedures. Before upgrading, ensure all previously released relevant errata are applied. Users should consult the official Red Hat documentation at https://docs.openshift.com/container-platform/latest/security/cert_manager_operator/index.html for detailed upgrade instructions. Since no explicit patch files or fixes are listed, following the upgrade process as described by Red Hat is the recommended remediation. Monitor Red Hat advisories for any further updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:0981
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-66471","CVE-2026-21441"]
- Cvss Version
- null
Threat ID: 6a160972e29bf47b5063a4a7
Added to database: 5/26/2026, 8:58:26 PM
Last enriched: 5/26/2026, 9:54:41 PM
Last updated: 5/27/2026, 4:53:46 AM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.