CVE-2026-114726: Webmail 1.6.0 to before 1.6.20, 1.7.0 to before 1.7.5

Affected technology

Webmail · 1.6.0 to before 1.6.20, 1.7.0 to before 1.7.5
Roundcube

Description’s affected range: before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action. rcube_mime::decode_address_list() did not strip control characters from the decoded display name

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 5.8/10) rates confidentiality and availability impact as none; integrity impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.