Description
Cross-site scripting (XSS) vulnerability in the web UI in Mailman before 2.1.26 allows remote attackers to inject arbitrary web script or HTML via a user-options URL.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | mailman | 1:2.1.23-1+deb9u2 | DSA-4108-1 |
| Debian 8 | mailman | 1:2.1.18-2+deb8u2 | DSA-4108-1 |
| Debian 7 | mailman | 1:2.1.15-1+deb7u3 | DLA-1272-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | mailman | 1:2.1.20-1ubuntu0.3 | USN-3563-1 |
| Ubuntu 14.04 LTS | mailman | 1:2.1.16-2ubuntu0.5 | USN-3563-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | mailman | 3:2.1.15-26.el7_4.1 | RHSA-2018:0505 |
| RHEL 6 | mailman | 3:2.1.12-26.el6_9.3 | RHSA-2018:0504 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES 12 SP3 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES 12 SP2 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES 12 SP1 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES 12 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | mailman | 2.1.15-9.6.6.1 | SUSE-SU-2019:13924-1 |
| SLES 11 SP3 | mailman | 2.1.15-9.6.6.1 | SUSE-SU-2019:13924-1 |
| SLES for SAP 12 SP4 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES for SAP 12 SP3 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES for SAP 12 SP2 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES for SAP 12 SP1 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SLES for SAP 11 SP4 | mailman | 2.1.15-9.6.6.1 | SUSE-SU-2019:13924-1 |
| SUSE OpenStack Cloud 7 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | mailman | 2.1.15-9.6.6.1 | SUSE-SU-2019:13924-1 |
| SUSE Enterprise Storage 4 | mailman | 2.1.17-3.3.3 | SUSE-SU-2018:4296-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | mailman | 3:2.1.15-26.amzn2.1 | ALAS2-2018-985 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | mailman | 3:2.1.15-26.el7_4.1 | ELSA-2018-0505 |
Advisories 9
- RHSA-2018:0505 Red Hat Security Advisory: mailman security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2018:0504 Red Hat Security Advisory: mailman security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-4108-1 mailman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1272-1 mailman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3563-1 mailman vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2019:13924-1 Security update for mailman SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4296-1 Security update for mailman SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2018-985 Moderate: mailman security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 5, 2018
- ELSA-2018-0505 Moderate: mailman security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 13, 2018
References
- 104594 vdb-entry
- RHSA-2018:0504 vendor-advisory
- USN-3563-1 vendor-advisory
- [mailman-users] 20180120 Mailman 2.1.26 Security release Feb 4, 2018 mailing-list
- DSA-4108 vendor-advisory
- RHSA-2018:0505 vendor-advisory
- https://bugs.launchpad.net/mailman/+bug/1747209
- [debian-lts-announce] 20180209 [SECURITY] [DLA 1272-1] mailman security update mailing-list
- http://packetstormsecurity.com/files/159761/Mailman-2.1.23-Cross-Site-Scripting.html