CVE-2020-11879

Name: CVE-2020-11879
Creator: NVD / NIST
Published: 2020-04-17T18:15:11.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.68%

Last modified Jun 17, 2026

CVE-2020-11879 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in GNOME Evolution before 3.35.91. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make Evolution attach local files or directories to a composed email message without showing a warning to the user, as demonstrated by an attach=. EPSS estimates a 2.68% chance of exploitation in the next 30 days.

Description

An issue was discovered in GNOME Evolution before 3.35.91. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make Evolution attach local files or directories to a composed email message without showing a warning to the user, as demonstrated by an attach=. value.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.68%

83.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Gnome	Evolution	< 3.35.91

References

https://gitlab.gnome.org/GNOME/evolution/-/blob/master/NEWSThird Party Advisory
https://gitlab.gnome.org/GNOME/evolution/issues/784Third Party Advisory
https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2020/08/15/mailto-paper.pdfThird Party Advisory
https://gitlab.gnome.org/GNOME/evolution/-/blob/master/NEWSThird Party Advisory
https://gitlab.gnome.org/GNOME/evolution/issues/784Third Party Advisory
https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2020/08/15/mailto-paper.pdfThird Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-11879?

How severe is CVE-2020-11879?

CVE-2020-11879 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11879?

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-2020-11879?

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

Scan your code now

Source: NVD / NIST