Interpretation Conflict in nodemailer - CVE-2026-92597
Published: September 30, 2026
Vulnerability identifier: #VU153012
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-2026-92597
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 Nodemailer address parser when processing a recipient address containing an RFC 5322 comment. A remote attacker can submit a crafted recipient address to disclose sensitive information.
Exploitation requires an application domain check that interprets the address differently from Nodemailer, such as a strict parser whose parse defects are not inspected or a prefix or substring allow-list check.
Affected software
nodemailer
IBM App Connect Enterprise
IBM App Connect Enterprise
How to mitigate CVE-2026-92597
Install security update from vendor's website.
nodemailer - update to 9.1.0
IBM App Connect Enterprise - update to 13.0.9.0
IBM App Connect Enterprise - update to 13.0.9.0