CVE-2026-33586: OVHcloud 0 to before 2026-07-20

Affected technology

OVHcloud · 0 to before 2026-07-20
OVHcloud

Description’s affected range: through OVH mail servers

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Any authenticated user with a valid OVH email account can send messages that appear to originate from any OVH-hosted domains using the default SPF record. Source advisory’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality, integrity and availability impact as none.