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    CVE-2026-114732

    Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identity records without qualifying the lookup by IMAP host, so a login could be resolved to a user account belonging to a different IMAP host. Upstream fixed this in the commit “Fix bug where an alias login wasn’t qualified by IMAP host”.

    Published:Oct 22, 2026
    Last Modified:Oct 22, 2026
    EPS:Oct 22, 2026
    EPSS Score:0.00358
    CVSS Score:6.8

    Affected Products

    Vendor
    Roundcube
    Product
    Webmail

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-114731 (CVSS 5.3) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vul…
    CVE-2026-114730 (CVSS 7.2) — Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery fil…
    CVE-2026-114729 (CVSS 5.3) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass. rcube_…
    CVE-2026-114728 (CVSS 5.3) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass in the …
    CVE-2026-114727 (CVSS 8.3) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 passes potentially unsafe content into ImageMagick when…
    CVE-2026-114726 (CVSS 5.8) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in…
    CVE-2026-114725 (CVSS 5) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. r…
    CVE-2026-114724 (CVSS 7.4) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcube_session…
    CVE-2026-114723 (CVSS 3.7) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the ImageMagick resource limits to be bypassed d…
    CVE-2026-114722 (CVSS 6.5) — Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. r…

    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