Improper Validation of Certificate with Host Mismatch Affecting node package, versions [22.0.0, 22.23.4)[24.0.0, 24.22.1)[26.0.0, 26.12.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UPSTREAM-NODE-21427910
- published22 Oct 2026
- disclosed21 Oct 2026
- creditanagnorisis2peripeteia
Introduced: 21 Oct 2026
NewCVE-2026-106069 (opens in a new tab)How to fix?
Upgrade node to version 22.23.4, 24.22.1, 26.12.1 or higher.
Overview
node is a JavaScript runtime built on Chrome's V8 JavaScript engine.
Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch the checkServerIdentity function in lib/tls.js. An attacker can cause a TLS client to accept a certificate that does not identify the connected peer by supplying a non-canonical numeric hostname, such as 127.1 or 0127.0.0.1, that domainToASCII() normalizes to an IP address while the platform resolver interprets it as a different address. This can enable server impersonation and expose or allow alteration of TLS traffic.
Notes
- At certificate matching, the bypass requires the certificate to contain an IP SAN matching the normalized address; a DNS SAN or CN alone does not satisfy this IP-address match.