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Fencer Vulns
medium 6.5

CVE-2021-43332 json

In GNU Mailman before 2.1.36, the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the list admin password.

published 2021-11-12 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30270

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

In GNU Mailman before 2.1.36, the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the list admin password. This could potentially be cracked by a moderator via an offline brute-force attack.

Patch / fix

  • gnu mailman 2.1.36
  • mailman Ubuntu 18.04 LTS 1:2.1.26-1ubuntu0.5
  • mailman Ubuntu Pro 16.04 LTS 1:2.1.20-1ubuntu0.6+esm2
  • mailman Ubuntu Pro 20.04 LTS 1:2.1.29-1ubuntu3.1+esm1

ubuntu advisories UBUNTU-CVE-2021-43332

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mailman SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +10 more 2.1.17-3.26.1

suse advisories SUSE-SU-2022:1886-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-43332 updated cvss 6.5

mailman: a list moderator can crack the list admin password encrypted in a CSRF token

  • Red Hat Enterprise Linux 7 mailman
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 mailman
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 mailman
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Classification

Weakness
  • CWE-522 Insufficiently Protected Credentials

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.