UBUNTU-CVE-2026-121551

    Dashboard / Vulnerabilities / UBUNTU-CVE-2026-121551

    UBUNTU-CVE-2026-121551

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121551

    Summary:

    Details: PostfixAdmin through 4.0.5 contains a stored cross-site scripting vulnerability that allows authenticated mailbox users to inject script by creating a TOTP exception with an unescaped description. When a global administrator views totp-exceptions.php, the script runs in the admin session and can issue authenticated admin requests using the page's CSRF token.

    References: https://ubuntu.com/security/CVE-2026-121551, https://www.cve.org/CVERecord?id=CVE-2026-121551, https://github.com/postfixadmin/postfixadmin, https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/public/users/totp-exceptions.php#L128, https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/templates/totp-exceptions.tpl#L56, https://github.com/postfixadmin/postfixadmin/commit/0a894b08769481ce1a7f0f42af901c6d9f88fa9c, https://github.com/postfixadmin/postfixadmin/issues/1185, https://github.com/postfixadmin/postfixadmin/pull/1172, https://github.com/postfixadmin/postfixadmin/pull/1186, https://www.vulncheck.com/advisories/postfixadmin-through-4.0.5-stored-xss-via-totp-exception-description

    Affected packages

    Package

    Name: postfixadmin

    Purl: pkg:deb/ubuntu/postfixadmin?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.3.7-1
    2.3.7-1ubuntu1

    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-2026-121551 | CVE-DB