# RHSA-2020:4667: mailman security update

RHSA-2020:4667, released November 4, 2020, fixes 1 CVE in mailman (version 3:2.1.29-10.module+el8.3.0+6860+8e47d84b). None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2020-4667
- Platform: Linux
- Released: Nov 4, 2020
- Priority: Routine (Closes CVE-2020-12137)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2020:4667

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mailman](https://patchblox.com/security/data/product/linux/mailman.md) | RHEL 8 | 3:2.1.29-10.module+el8.3.0+6860+8e47d84b |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-12137](https://patchblox.com/security/data/cve/CVE-2020-12137.md) | Routine | mailman: Mailman is a program used to help manage e-mail discussion lists.  Security Fix(es):  * mailman: XSS via file attachm... | 6.1 | 0.0229 |  |

---

Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo