# CVE-2021-42096: mailman: Mailman is a program used to help manage e-mail discussion lists.  Security Fix(es):  * mailman: CSRF token bypass al...

CVE-2021-42096 is fixed in mailman on 1 platform, first by mailman 1:2.1.26-1ubuntu0.4, released October 20, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-42096
- Priority: High
- CVSS: 8.0 (Important)
- EPSS: 0.0125
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2021

## Description

Mailman is a program used to help manage e-mail discussion lists.  Security Fix(es):  * mailman: CSRF token bypass allows to perform CSRF attacks and account takeover (CVE-2021-42097)  * mailman: CSRF token derived from admin password allows offline brute-force attack (CVE-2021-42096)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mailman RHEL 8 | 3:2.1.29-12.module+el8.5.0+13211+e8845b76.1 | [RHSA-2021:4826](https://patchblox.com/security/data/fix/linux/rhsa-2021-4826.md) | Nov 23, 2021 |
| Linux | mailman Ubuntu 18.04.6 LTS (bionic) | 1:2.1.26-1ubuntu0.4 | [mailman 1:2.1.26-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mailman-1-2.1.26-1ubuntu0.4.md) | Oct 20, 2021 |
| Linux | mailman Ubuntu 20.04 LTS (focal) | 1:2.1.29-1ubuntu3.1 | [mailman 1:2.1.29-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mailman-1-2.1.29-1ubuntu3.1.md) | Oct 20, 2021 |
| Linux | mailman almalinux 8 | 3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2 | [ALSA-2021:4826](https://patchblox.com/security/data/fix/linux/alsa-2021-4826.md) | Nov 23, 2021 |
| Linux | mailman ol 8 | 3:2.1.29-12.module+el8.5.0+20429+dde04a6e.1 | [ELSA-2021-4826](https://patchblox.com/security/data/fix/linux/elsa-2021-4826.md) | Nov 24, 2021 |
| Linux | mailman rocky 8 | 3:2.1.29-12.module+el8.5.0+717+27fd1ba7.2 | [RLSA-2021:4826](https://patchblox.com/security/data/fix/linux/rlsa-2021-4826.md) | Nov 23, 2021 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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