CVE-2021-42097
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 70.6% of scored records. A rank, not a probability.
- NVD base score
- 8.0 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-10-21 00:45Z5 YR AGO
- Last updated
- 2024-08-04 03:22Z2 YR AGO
- Reserved
- 2021-10-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-352Cross-Site Request Forgery (CSRF)Compound
- Data version
- 5.1
- Document digest
- dafdefe4262ea30e6f653ceca8905de3ccbf4fd3a5eaec9cfca7a71e85982b25
05 Affected products
06 References
- mail.python.orghttps://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
- bugs.launchpad.nethttps://bugs.launchpad.net/mailman/+bug/1947640
- www.openwall.com[oss-security] 20211021 Mailman 2.1.35 security releasehttp://www.openwall.com/lists/oss-security/2021/10/21/4
- www.debian.orgDSA-4991https://www.debian.org/security/2021/dsa-4991
07 Fixed in
AlmaLinux 8
- mailman Fixed
A version is affected if any line below covers it.
- Affected before 3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2
- Affected before 3:2.1.29-12.module_el8.5.0+2601+e8845b76.1
- Affected before 3:2.1.29-12.module_el8.5.0+2602+327eb9f3.2
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- mailman Fixed
A version is affected if any line below covers it.
- Affected before 3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2
- Affected before 3:2.1.29-12.module_el8.5.0+2601+e8845b76.1
- Affected before 3:2.1.29-12.module_el8.5.0+2602+327eb9f3.2
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- mailman Fixed in 1:2.1.26-1ubuntu0.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- mailman Fixed in 1:2.1.29-1ubuntu3.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- mailman Fixed in 1:2.1.20-1ubuntu0.6+esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.