CVE-2020-11880: Kde Kmail

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in KDE KMail before 19.12.3. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make KMail attach local files to a composed email message without showing a warning to the user, as demonstrated by an attach=.bash_history value.

Affected products

• Kde Kmail: before 19.12.3 (fixed in 19.12.3)

Published 2020-04-17. Last modified 2026-06-17.