CVE-2021-43332Network attack vector

List-admin password disclosure via CSRF token

Published Nov 12, 2021 · Updated Aug 4, 2024

Information disclosure in GNU Mailman before 2.1.36 allows remote authenticated users to recover list-admin passwords via crafted CSRF tokens. The Cgi/admindb.py admindb page places an encrypted list-admin password inside its CSRF token, enabling offline brute-force cracking by a moderator who obtains the token. Successful cracking discloses the list administrator credential; exploitation requires moderator access to the page and does not itself alter Mailman data or availability.

CVSS severity6.5
Medium
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GNU Mailman before 2.1.36 allows remote authenticated users to recover list-admin passwords via crafted CSRF tokens. The Cgi/admindb.py admindb page places an encrypted list-admin password inside its CSRF token, enabling offline brute-force cracking by a moderator who obtains the token. Successful cracking discloses the list administrator credential; exploitation requires moderator access to the page and does not itself alter Mailman data or availability.

The record

CVE
CVE-2021-43332
Published
Nov 12, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5UbuntuCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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