Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5Attack Vector: Network
Complexity: Low
Privileges: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None
Affected Packages2 packages
▶Debiankmail< 4:20.04.1-1+3 🔴Vulnerability Details
3GHSAGHSA-76gc-v974-87g9: An issue was discovered in KDE KMail before 19↗2022-05-24 CVEListCVE-2020-11880: An issue was discovered in KDE KMail before 19↗2020-04-17 OSVCVE-2020-11880: An issue was discovered in KDE KMail before 19↗2020-04-17 📋Vendor Advisories
3UbuntuKDE PIM vulnerabilities↗2025-09-02 UbuntuKMail vulnerabilities↗2025-09-02 DebianCVE-2020-11880: kmail - An issue was discovered in KDE KMail before 19.12.3. By using the proprietary (n...↗2020 💬Community
2BugzillaCVE-2020-11880 kmail: using a special parameter an attacker can force kmail to attach local files to a composed email [fedora-all]↗2020-05-06 BugzillaCVE-2020-11880 kmail: using a special parameter an attacker can force kmail to attach local files to a composed email↗2020-05-05