CVE-2021-42096
MEDIUMCVSS 4.3/10EPSS 1.21%
Last modified
CVE-2021-42096 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.
Description
GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Mailman | < 2.1.35 |
| Debian | Debian Linux | 10.0 |
References
- http://www.openwall.com/lists/oss-security/2021/10/21/4Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/mailman/+bug/1947639Patch, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4991Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/21/4Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/mailman/+bug/1947639Patch, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4991Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42096?
GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.
How severe is CVE-2021-42096?
CVE-2021-42096 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42096?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42096?
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