Improper Validation of Certificate with Host Mismatch Affecting nodejs/node package, versions [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-UNMANAGED-NODEJSNODE-21427266
- published22 Oct 2026
- disclosed21 Oct 2026
- credithasanfleyah
Introduced: 21 Oct 2026
NewCVE-2026-105483 (opens in a new tab)How to fix?
Upgrade nodejs/node to version 24.22.1, 26.12.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch via the checkServerIdentity function in lib/tls.js. An attacker can bypass certificate hostname checks by getting a TLS client to connect using fullwidth digits representing an IPv4 address and presenting a certificate whose DNS SAN or CN matches the ASCII-normalized address; the client then accepts a certificate that does not identify the requested IP address.