CVE-2024-53920
HIGH7.8EPSS 0.05%emacs - security update
Published: 11/27/2024Modified: 4/28/2026
Description
In elisp-mode.el in GNU Emacs before 30.1, a user who chooses to invoke elisp-completion-at-point (for code completion) on untrusted Emacs Lisp source code can trigger unsafe Lisp macro expansion that allows attackers to execute arbitrary code. (This unsafe expansion also occurs if a user chooses to enable on-the-fly diagnosis that byte compiles untrusted Emacs Lisp source code.)
Affected packages (2)
- Debian/emacsfrom 0, < 1:27.1+1-3.1+deb11u6
- Debian/emacsfrom 0, < 1:28.2+1-15+deb12u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |