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TI-2021-18606 Aliases CVE-2021-42097GHSA-vj65-f4hc-r425

GNU Mailman before 2.1.35 may allow remote Privilege Escalation.

Priority LOW 38CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 6 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-352.

Summary

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).

Why it matters now

EPSS 0.01332 71st percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 6 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*before 2.1.35VulnerableGNU
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:* Versions before 2.1.35 Vulnerable ·GNU
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2021:4913 Released 2021-12-02 · Red Hat rating Important
    mailman security update
    • Red Hat Enterprise Linux Server (v. 7) mailman-3:2.1.15-30.el7_9.2
    • Red Hat Enterprise Linux Workstation (v. 7) mailman-3:2.1.15-30.el7_9.2
  • RHSA-2021:4839 Released 2021-11-24 · Red Hat rating Important
    mailman:2.1 security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) mailman-3:2.1.29-11.module+el8.4.0+13212+81332387.1.aarch64::mailman:2.1, mailman-3:2.1.29-11.module+el8.4.0+13212+81332387.1.ppc64le::mailman:2.1, mailman-3:2.1.29-11.module+el8.4.0+13212+81332387.1.s390x::mailman:2.1 +2
  • RHSA-2021:4837 Released 2021-11-24 · Red Hat rating Important
    mailman:2.1 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) mailman-3:2.1.29-4.module+el8.2.0+13241+705a6aa4.3.aarch64::mailman:2.1, mailman-3:2.1.29-4.module+el8.2.0+13241+705a6aa4.3.ppc64le::mailman:2.1, mailman-3:2.1.29-4.module+el8.2.0+13241+705a6aa4.3.s390x::mailman:2.1 +2
Show 2 more Red Hat advisories
  • RHSA-2021:4838 Released 2021-11-24 · Red Hat rating Important
    mailman:2.1 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.1) mailman-3:2.1.29-4.module+el8.1.0+13242+45286865.1.aarch64::mailman:2.1, mailman-3:2.1.29-4.module+el8.1.0+13242+45286865.1.ppc64le::mailman:2.1, mailman-3:2.1.29-4.module+el8.1.0+13242+45286865.1.s390x::mailman:2.1 +2
  • RHSA-2021:4826 Released 2021-11-23 · Red Hat rating Important
    mailman:2.1 security update
    • Red Hat Enterprise Linux AppStream (v. 8) mailman-3:2.1.29-12.module+el8.5.0+13211+e8845b76.1.aarch64::mailman:2.1, mailman-3:2.1.29-12.module+el8.5.0+13211+e8845b76.1.ppc64le::mailman:2.1, mailman-3:2.1.29-12.module+el8.5.0+13211+e8845b76.1.s390x::mailman:2.1 +2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:4826
Red Hat Enterprise Linux AppStream EUS (v. 8.1)Fixed RHSA-2021:4838
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:4837
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2021:4839
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:4913
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:4913

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-42097
  2. 2026-10-03 Alias added: GHSA-vj65-f4hc-r425

References

Patch 2

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences