CVE-2004-1177: PYSEC-2026-659 - mailman Cross-site scripting (XSS) vulnerability

CVE-2004-1177 · Severity: info · Published 2026-07-02

mailman Cross-site scripting (XSS) vulnerability

Technologies: mailman (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2004-1177 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2004-1177 being exploited in the wild.
How severe is CVE-2004-1177?
Informational severity, published 2 July 2026.
Which products and versions are affected?
mailman (PyPI) ECOSYSTEM:introduced=0,fixed=2.1.5.
Is there a fix for CVE-2004-1177?
Yes. mailman (PyPI): upgrade to 2.1.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2004-1177?
Check whether you run mailman (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • mailman (PyPI): upgrade to 2.1.5 or later
    pip install "mailman>=2.1.5"

Affected products

  • mailman (PyPI) ECOSYSTEM:introduced=0,fixed=2.1.5

Identifiers

  • CVE-2004-1177
  • GHSA-rh6c-jh4c-9fg3
  • PYSEC-2026-659

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