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Fencer Intel
high 8.8

CVE-2016-6893 json

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hija…

published 2016-09-02 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7778

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hijack the authentication of arbitrary users for requests that modify an option, as demonstrated by gaining access to the credentials of a victim's account.

Patch / fix

  • mailman Ubuntu 14.04 LTS 1:2.1.16-2ubuntu0.2
  • mailman Ubuntu 16.04 LTS 1:2.1.20-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-6893

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 RHEL 7 3:2.1.15-30.el7_9.2

red hat advisories RHSA-2021:4913

  • mailman SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.1.15-9.6.12.1
  • mailman SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +2 more 2.1.15-9.6.6.1
  • mailman SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +9 more 2.1.17-3.3.3
  • mailman SLES for SAP 11 SP4, SLES 11 SP4 2.1.15-9.6.3.1

suse advisories SUSE-SU-2019:14068-1SUSE-SU-2019:13924-1SUSE-SU-2018:4296-1SUSE-SU-2018:1638-1

  • mailman openSUSE Tumbleweed 2.1.23-1.2

opensuse advisories openSUSE-SU-2024:10215-1

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-2016-6893 updated cvss 6.5

mailman: CSRF protection missing in the user options page

  • Red Hat Enterprise Linux 5 mailman Red Hat Enterprise Linux 6 mailman
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Server (v. 7) mailman 2.1.15-30.el7_9.2 Red Hat Enterprise Linux Workstation (v. 7) mailman 2.1.15-30.el7_9.2
    fixed: vendor fix RHSA-2021:4913

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

1.61% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

Fencer Intel 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.