CVE-2026-110870

node-nodemailer: Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that f...

CVE-2026-110870 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-110870 (version 10.0.13+~8.0.2-1), released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0027
18th percentile

Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.

Where it's fixed

ProductFixed inFixReleased
Linux
node-nodemailer · Debian 14 10.0.13+~8.0.2-1 DEBIAN-CVE-2026-110870 Oct 16, 2026

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