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CVE-2020-11879

An issue was discovered in GNOME Evolution before 3.35.91. By using the proprietary (non-RFC6068)...

6.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

2.76%Up 1.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

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.

Record
CVE-2020-11879
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2020-11879
Updated
2026-11-02
EUVDEUVD-2020-4219 No score

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.

Record
EUVD-2020-4219
Updated
2026-11-03
GitHub AdvisoriesGHSA-c29m-85fj-ccfm 6.5

An issue was discovered in GNOME Evolution before 3.35.91. By using the proprietary (non-RFC6068)...

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=.bash_history value.

Record
GHSA-c29m-85fj-ccfm
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSV 6.5

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.

Record
CVE-2020-11879
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2020-11879 6.5

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.

Record
DEBIAN-CVE-2020-11879
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2020-11879 6.5

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.

Record
UBUNTU-CVE-2020-11879
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVSUSE-SU-2023:3375-1 No score

Security update for evolution

This update for evolution fixes the following issues:

  • CVE-2020-11879: Fixed issue where websites can attach local files to emails by using a proprietary parameter without warning the user (bsc#1169843).
  • Fix some warnings with newer WebKit
  • Handle frame flattening change in WebKitGTK 2.40 (bsc#1213858)
Record
SUSE-SU-2023:3375-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
evolution
Debian:12
 before 3.36.0-1
3.36.0-1
evolution
Debian:13
 before 3.36.0-1
3.36.0-1
evolution
Debian:14
 before 3.36.0-1
3.36.0-1
evolution
SUSE:Linux Enterprise Software Development Kit 12 SP5
 before 3.22.6-19.14.1
3.22.6-19.14.1
evolution
SUSE:Linux Enterprise Workstation Extension 12 SP5
 before 3.22.6-19.14.1
3.22.6-19.14.1
evolution
Ubuntu:16.04:LTS
 All versions, plus listed versions
3.16.5-1ubuntu33.18.1-1ubuntu23.18.2-0ubuntu13.18.2-0ubuntu23.18.3-0ubuntu1
Show 8 moreShow less
3.18.3-1ubuntu13.18.4-0ubuntu13.18.5-1ubuntu13.18.5.1-1ubuntu13.18.5.2-0ubuntu13.18.5.2-0ubuntu33.18.5.2-0ubuntu3.13.18.5.2-0ubuntu3.2
 None known
evolution
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.26.1-13.26.2-13.26.2-1ubuntu13.26.3-13.26.5-1
Show 8 moreShow less
3.26.5-1build13.27.90-13.28.0-13.28.0-43.28.1-13.28.1-23.28.5-0ubuntu0.18.04.13.28.5-0ubuntu0.18.04.2
 None known
evolution
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.34.1-23.34.1-2build13.34.1-33.34.1-43.35.91-1
Show 8 moreShow less
3.35.92-13.36.0-13.36.1-13.36.1-23.36.2-0ubuntu13.36.3-0ubuntu13.36.4-0ubuntu13.36.5-0ubuntu1
 None known
evolution
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.40.4-13.42.0-23.42.1-13.42.2-13.42.3-1
Show 7 moreShow less
3.43.3-13.44.0-13.44.0-1ubuntu13.44.1-0ubuntu13.44.4-0ubuntu13.44.4-0ubuntu23.44.4-0ubuntu2.1
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-11879 is a medium vulnerability (CVSS 6.5) in Gnome Evolution, published April 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.76%, the 86th percentile. Fixed in evolution 3.36.0-1.

References

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