CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2020-12137
Medium (6.1). EPSS 2.3% chance of exploitation in the next 30 days.
GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.
Severity
- EPSS
- 2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- gnu:mailman
- opensuse:backports_sle
- opensuse:leap
References
- http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
- http://www.openwall.com/lists/oss-security/2020/04/24/3
- https://lists.debian.org/debian-lts-announce/2020/05/msg00002.html