Interpretation Conflict in nodemailer - CVE-2026-92598

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Main Vulnerability Database Vulnerabilities #VU153013

Interpretation Conflict in nodemailer - CVE-2026-92598

Published: September 30, 2026


Vulnerability identifier: #VU153013
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-92598
CWE-ID: CWE-436
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an interpretation conflict in the _normalizeAddress function in lib/mime-node/index.js when processing internationalized recipient domains. A remote attacker can submit a crafted recipient address that bypasses a domain allow-list to disclose sensitive information.

An invisible soft hyphen can trigger the domain-normalization discrepancy.


Affected software

nodemailer
IBM App Connect Enterprise

How to mitigate CVE-2026-92598

Install security update from vendor's website.

nodemailer - update to 9.1.0
IBM App Connect Enterprise - update to 13.0.9.0

External References

Related Security Bulletins