PYSEC-2026-660

Vulnerability from pysec - Published: 2026-07-02 14:13 - Updated: 2026-07-06 07:36
VLAI
Details

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.

Impacted products
Name purl
mailman pkg:pypi/mailman

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "mailman",
        "purl": "pkg:pypi/mailman"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.38"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.0b3-"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-44227",
    "GHSA-xq58-69h2-765m"
  ],
  "details": "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.",
  "id": "PYSEC-2026-660",
  "modified": "2026-07-06T07:36:49.854291Z",
  "published": "2026-07-02T14:13:14.288696Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44227"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/mailman/+bug/1952384"
    },
    {
      "type": "PACKAGE",
      "url": "https://gitlab.com/mailman/mailman"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00011.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/mailman"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-xq58-69h2-765m"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross Site Request Forgery in mailman"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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