CVE-2025-62328 in Nomad Server on Domino
Summary
by MITRE • 03/12/2026
HCL Nomad server on Domino did not configure the frame-ancestors directive in the Content-Security-Policy header by default which could allow an attacker to obtain sensitive information via unspecified vectors.
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Analysis
by VulDB Data Team • 03/17/2026
The vulnerability identified as CVE-2025-62328 affects HCL Nomad server implementations running on IBM Domino platforms where the Content-Security-Policy header lacks proper configuration of the frame-ancestors directive. This security gap represents a significant weakness in the server's defensive posture against cross-site framing attacks and potential information disclosure scenarios. The absence of this crucial directive in the security policy header creates an exploitable condition that adversaries can leverage to manipulate how web content is embedded across different contexts.
The technical flaw stems from the default configuration of the HCL Nomad server component within the Domino environment failing to establish proper frame-ancestors restrictions in the Content-Security-Policy implementation. This directive is essential for controlling which sources can embed the server's content within frames, iframes, or similar embedding mechanisms. Without this protection, malicious actors can potentially frame the vulnerable server content within attacker-controlled pages, creating opportunities for various attack vectors including clickjacking, session hijacking, and sensitive data extraction through cross-origin embedding techniques. The unspecified vectors mentioned in the description suggest that the attack surface encompasses multiple potential exploitation methods that rely on the lack of frame-ancestors restrictions.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass broader security implications for Domino server environments. Attackers exploiting this weakness can potentially manipulate how their content interacts with the Nomad server, leading to unauthorized access to sensitive information through embedded framing techniques. This vulnerability particularly affects organizations relying on Domino for critical business applications where information security is paramount. The default nature of the configuration issue means that deployments are likely to be affected without explicit administrator intervention, creating widespread exposure across organizations using HCL Nomad within Domino infrastructure. The vulnerability creates conditions where attackers can perform reconnaissance and establish footholds within the target environment through indirect means that don't require direct authentication or exploitation of primary application vulnerabilities.
Organizations should immediately implement the frame-ancestors directive within their Content-Security-Policy headers to restrict embedding to trusted sources only. The recommended configuration should explicitly define which domains are permitted to frame the server content, typically using values such as 'self' for internal domains or specific trusted partner domains. Security teams must conduct comprehensive assessments of their Domino server configurations to identify all affected instances and ensure proper CSP header implementation across all web-facing components. Additionally, regular monitoring and auditing of security headers should be established to prevent regression of this configuration. This vulnerability aligns with CWE-1021 which addresses improper restriction of XML external entity processing and specifically relates to inadequate Content-Security-Policy implementation. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access through web application attacks and information gathering through reconnaissance activities, particularly the T1566.001 technique for credential access through exploitation of web application vulnerabilities. The remediation approach should include implementing proper CSP policies, conducting security awareness training for administrators, and establishing configuration management procedures to prevent similar issues in future deployments.