CVE-2021-42097
highpriority · track · 32EPSS 0.013 · 71 %ileEUUSEPSS · scored 2026-10-28
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).
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (26)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2021/10/21/4cnnvd
- https://access.redhat.com/security/cve/cve-2021-42097cnnvd
- https://bugs.launchpad.net/mailman/+bug/1947640cnnvd
- https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-42097cnnvd
- https://packetstormsecurity.com/files/164601/Ubuntu-Security-Notice-USN-5121-1.htmlcnnvd
- https://packetstormsecurity.com/files/164743/Ubuntu-Security-Notice-USN-5121-2.htmlcnnvd
- https://packetstormsecurity.com/files/165076/Red-Hat-Security-Advisory-2021-4837-02.htmlcnnvd
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