WinMagic
Security Advisory
CVE-2026-106069 — TLS Hostname Validation Bypass via Loose IP Resolution
Reference: KB-SEC-2026-1028-05 | Published: October 28, 2026 | Status: Not Affected
Applies to: SecureDoc Client, SES Console, SESWeb (all versions)
Third-party component affected: Node.js | Severity: High
Executive summary
WinMagic is aware of CVE-2026-106069 (TLS Hostname Validation Bypass via Loose IP Resolution), a vulnerability affecting Node.js. WinMagic has reviewed this CVE against SecureDoc Client, the SES Console and SESWeb. None of these products is affected, for the reason given below. No remediation, patch, or configuration change is required in response to this CVE.
Vulnerability details
CVE ID | CVE-2026-106069 |
Title | TLS Hostname Validation Bypass via Loose IP Resolution |
Affected third-party component | Node.js |
Severity | High |
CVSS | Not published by the Node.js project as a numeric score; the Node.js security release and downstream advisories rate it High severity. |
Affected versions (upstream) | Node.js 26.x, 24.x, and 22.x lines prior to the October 2026 security release (26.12.1, 24.22.1, 22.23.4). |
What the vulnerability is
Node.js's TLS hostname validation accepts a certificate when the connection's host string loosely resolves to an IP address, rather than requiring a strict, unambiguous match. This loose resolution allows a certificate scoped to one host identity to be accepted for a different one.
Why you should pay attention
This enables cross-host impersonation: a server identity check that should fail can instead succeed, letting an attacker-controlled endpoint pass as a different, trusted host. Any Node.js application that relies on TLS hostname validation to confirm it is talking to the server it intended to reach is at risk of being misdirected without any visible error.
WinMagic product assessment
SecureDoc Client, SES Console, and SESWeb
SecureDoc does not include, install or depend on a Node.js runtime.
Conclusion: SecureDoc Client, the SES Console and SESWeb are not affected by CVE-2026-106069.
Remediation
No WinMagic product-specific remediation, software update, patch, or configuration change is required in response to CVE-2026-106069. Organizations that run Node.js elsewhere in their own environment, outside of WinMagic products, should apply that vendor's own patch according to their standard process.
Ongoing monitoring
WinMagic continues to monitor relevant security advisories and available information concerning CVE-2026-106069. Should new information materially change this assessment, WinMagic will review its potential impact on SecureDoc Client, the SES Console or SESWeb and update this article accordingly.
Questions about this advisory
Customers with questions about this assessment can contact WinMagic Support through the usual support channel referencing KB-SEC-2026-1028-05.
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