Bug 2552969 (CVE-2026-110870) - CVE-2026-110870 nodemailer: nodemailer: Domain allow-list bypass via improper address comment parsing
Summary: CVE-2026-110870 nodemailer: nodemailer: Domain allow-list bypass via improper...
Keywords:
Status: NEW
Alias: CVE-2026-110870
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-14 23:02 UTC by OSIDB Bzimport
Modified: 2026-10-14 23:10 UTC (History)
21 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-14 23:02:18 UTC 
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.
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