CVE-2026-45178: Idira Secrets Manager Access Control Vulnerability (CVSS 8.1)

Technical summary

CVE-2026-45178 stems from improper access control (CWE-284) on internal cluster endpoints within Idira Secrets Manager Self-Hosted deployments. The flaw permits authenticated attackers holding standard node-level credentials to interact with privileged cluster communication interfaces, potentially exfiltrating sensitive material or triggering denial-of-service conditions. The CVSS 3.1 vector (8.1/HIGH: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H) reflects network-accessible endpoints, low attack complexity, requirement for low-privilege authentication, high confidentiality impact, and high availability impact.

Business impact

Organizations relying on Idira Secrets Manager Self-Hosted to centralize credential storage face dual exposure: confidential data breach (secrets exfiltration) and operational disruption (DoS). The attack requires valid user credentials, elevating risk in environments with poor access hygiene, shared accounts, or recent credential compromise. For enterprises managing infrastructure authentication across multiple systems, this vulnerability could enable lateral movement if exposed secrets belong to privileged accounts.

Affected systems

Idira Secrets Manager Self-Hosted versions 13.8.0 and below are affected. Credential Providers bundled with affected Secrets Manager versions inherit the risk. Cloud-hosted or managed deployments operated directly by Palo Alto Networks may have different exposure depending on deployment topology; verify your environment with the vendor. Organizations should audit deployed versions immediately.

Exploitability

Exploitation is straightforward for an authenticated attacker: network accessibility combined with low attack complexity means an insider or threat actor with compromised credentials can weaponize this flaw with minimal additional tooling. No user interaction is required. However, the prerequisite authentication barrier—while still a meaningful constraint—suggests this is not a worm-capable vector. Attackers must first obtain valid node-level credentials through phishing, credential stuffing, or prior compromise.

Remediation

Upgrade Idira Secrets Manager Self-Hosted to a patched version above 13.8.0. Consult the CyberArk Security Bulletin CA26-20 for exact version numbers and migration guidance. In parallel, enforce network segmentation to restrict access to cluster endpoints only to authorized administrative systems, and implement least-privilege credential policies to limit the blast radius of compromised node-level accounts.

Patch guidance

Apply the patched version per CyberArk Security Bulletin CA26-20. Before upgrading, validate compatibility with dependent Credential Providers and test in a non-production environment. If immediate patching is not feasible, isolate affected Secrets Manager instances from untrusted network segments and restrict cluster endpoint access via firewall rules. Monitor for suspicious cluster-level API activity during the interim period.

Detection guidance

Monitor for unauthorized access attempts to internal cluster endpoints by authenticated users with node-level privileges. Log and alert on anomalous credential queries or bulk secret retrieval requests originating from unexpected sources. Examine cluster communication logs for lateral movement patterns or unusual privilege escalation attempts. Implement anomaly detection on secrets access patterns to catch exfiltration attempts. Review audit logs for failed or succeeded authentication from compromised accounts.

Why prioritize this

This vulnerability merits urgent attention due to its HIGH severity score, the sensitivity of secrets stored in Secrets Manager, and the operational impact of potential DoS. While it requires prior authentication, the low barrier to exploitation for anyone with valid credentials and the potential for widespread blast radius in infrastructure environments justify priority remediation. Organizations with strong credential hygiene and network segmentation may lower their timeline slightly, but should not defer indefinitely.

Risk score, explained

The CVSS 8.1/HIGH score reflects the combination of network accessibility, low attack complexity, and dual impact (high confidentiality loss and high availability loss). The score is tempered by the requirement for low-privilege authentication (PR:L). For most organizations, the true risk is elevated further by the nature of the asset (secrets), the likelihood of compromised credentials in active incidents, and the potential for lateral movement using exfiltrated secrets.

Frequently asked questions