CVE Feed

    Dashboard / CVE / CVE-2026-91831

    CVE-2026-91831

    The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the sender.

    Published:Oct 19, 2026
    Last Modified:Oct 21, 2026
    EPS:Oct 19, 2026
    EPSS Score:0.00161
    CVSS Score:3.8

    Affected Products

    Vendor
    Wordpress-extensions
    Product
    Subscribe To Comments

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-15 Command Delimiters
    CAPEC-81 Web Server Logs Tampering

    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