UBUNTU-CVE-2026-121426

    Dashboard / Vulnerabilities / UBUNTU-CVE-2026-121426

    UBUNTU-CVE-2026-121426

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121426

    Summary:

    Details: Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability in addressparser that ends an angle-addr at a '>' inside a quoted local part, comment or domain literal. Attackers can submit addresses that validate as an allowed domain but are delivered to an attacker-controlled domain, bypassing recipient allow lists and disclosing message content.

    References: https://ubuntu.com/security/CVE-2026-121426, https://www.cve.org/CVERecord?id=CVE-2026-121426, https://github.com/nodemailer/nodemailer/security/advisories/GHSA-85x2-q946-cp5h, https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-domain-confusion-via-addressparser

    Affected packages

    Package

    Name: node-nodemailer

    Purl: pkg:deb/ubuntu/node-nodemailer?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    6.3.0-2
    6.3.1-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-121426 | CVE-DB