Description
In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.
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+deb9u8 | DLA-3049-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mailman | 1:2.1.26-1ubuntu0.6 | USN-5180-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | mailman | 1:2.1.29-1ubuntu3.1+esm2 | — |
| Ubuntu Pro 16.04 LTS | mailman | 1:2.1.20-1ubuntu0.6+esm3 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | mailman | 3:2.1.29-12.module+el8.5.0+13466+327eb9f3.2 | RHSA-2021:4916 |
| RHEL 7 | mailman | 3:2.1.15-30.el7_9.2 | RHSA-2021:4913 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 EUS | mailman | 3:2.1.29-11.module+el8.4.0+13467+746daedf.2 | RHSA-2021:4915 |
| RHEL 8.2 EUS | mailman | 3:2.1.29-6.module+el8.2.0+13543+86b2c701 | RHSA-2021:5080 |
| RHEL 8.1 E4S | mailman | 3:2.1.29-5.module+el8.1.0+13542+e9b93c88 | RHSA-2021:5081 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | mailman | 3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2 | ALSA-2021:4916 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | mailman | 3:2.1.29-12.module+el8.5.0+703+19300c10 | RLSA-2021:4916 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SLES 12 SP4 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SLES 12 SP3 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SLES 12 SP2 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SLES for SAP 12 SP4 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SLES for SAP 12 SP3 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SUSE OpenStack Cloud Crowbar 9 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SUSE OpenStack Cloud Crowbar 8 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SUSE OpenStack Cloud 9 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SUSE OpenStack Cloud 8 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
| SUSE HPE Helion OpenStack 8 | mailman | 2.1.17-3.26.1 | SUSE-SU-2022:1886-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | mailman | 3:2.1.15-30.amzn2.2 | ALAS2-2022-1740 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | mailman | 3:2.1.29-12.module+el8.5.0+20436+78a1860c.2 | ELSA-2021-4916 |
| Oracle Linux 7 | mailman | 3:2.1.15-30.el7_9.2 | ELSA-2021-4913 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | mailman | < 2.1.38 | 2.1.38 | GHSA-xq58-69h2-765m |
Advisories 16
- ALSA-2021:4916 Important: mailman:2.1 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2022-0432 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- WID-SEC-2022-0302 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2021:5081 Red Hat Security Advisory: mailman:2.1 security update Red Hat Security Advisories (RHSA) · Sep 8, 2026
- RHSA-2021:4916 Red Hat Security Advisory: mailman:2.1 security update Red Hat Security Advisories (RHSA) · Sep 8, 2026
- RHSA-2021:5080 Red Hat Security Advisory: mailman:2.1 security update Red Hat Security Advisories (RHSA) · Sep 8, 2026
- RHSA-2021:4915 Red Hat Security Advisory: mailman:2.1 security update Red Hat Security Advisories (RHSA) · Sep 8, 2026
- RHSA-2021:4913 Red Hat Security Advisory: mailman security update Red Hat Security Advisories (RHSA) · Sep 8, 2026
- DLA-3049-1 mailman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-0245 GNU Mailman: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Mar 2, 2026
- USN-5180-1 mailman vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- RLSA-2021:4916 Important: mailman:2.1 security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:1886-1 Security update for mailman SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2022-1740 Important: mailman security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 20, 2022
- ELSA-2021-4913 Important: mailman security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 3, 2021
- ELSA-2021-4916 Important: mailman:2.1 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Dec 2, 2021