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CVE-2026-114475

CVE-2026-114475 · Missing Authorization in hMailServer

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Missing authorization in the REST role-management routes of Progressive Robot hMailServer 6.3.4 through 6.3.6 allows a remote authenticated user whose credential is confined to named domains to modify a custom role that accounts in other domains hold, and to create custom roles and delete any that no account holds. The routes that create, update and delete a custom role require the manage_roles permission, which only the serveradmin role holds; but a full-scope API key issued for named domains, and serveradmin assigned with a domain list, are serveradmin confined to those domains and hold manage_roles. The server's authorization gate did not refuse the three role routes to a confined credential and the route named no domain, so a credential issued to one tenant could raise or lower the permissions of a custom role assigned across other tenants - granting another domain's role every permission over its mailboxes and settings, or removing what it needs. A custom role may not hold administer_server, administer_domain or manage_roles, so the confined credential cannot make itself or another a server administrator by creating or rewriting a custom role.

CVSS 6.5 · Средний · EPSS 0,2%

Опубликовано
Обновлено

Затронутые продукты и версии

  • hmailserver

    Версии
    • ≥ 6.3.4, ≤ 6.3.6: Затронуто (semver)

    Нет опубликованного исправления

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