CVE-2020-11880

Name: CVE-2020-11880
Creator: NVD / NIST
Published: 2020-04-17T18:15:11.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2020-11880 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.85%

53.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Kde	Kmail	< 19.12.3

References

https://cgit.kde.org/kmail.git/commit/?id=2a348eccd352260f192d9b449492071bbf2b34b1Patch, Vendor Advisory
https://cgit.kde.org/kmail.git/tag/?h=v19.12.3Vendor Advisory
https://cgit.kde.org/kmail.git/commit/?id=2a348eccd352260f192d9b449492071bbf2b34b1Patch, Vendor Advisory
https://cgit.kde.org/kmail.git/tag/?h=v19.12.3Vendor Advisory

Timeline

Published: Apr 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11880?

How severe is CVE-2020-11880?

CVE-2020-11880 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11880?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11880?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST