CVEvulnerability
CVE-2024-53920
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2024-11-27
- Last modified
- 2026-09-21
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-94
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 configurations
• gnu emacs (< 30.1)
Related
Weakness · CWE (1)
- CWE-94 Improper Control of Generation of Code weakness
References
- https://eshelyaron.com/posts/2024-11-27-emacs-aritrary-code-execution-and-how-to-avoid-it.html Third Party Advisory
- https://git.savannah.gnu.org/cgit/emacs.git/tag/?h=emacs-30.0.92 Product
- https://git.savannah.gnu.org/cgit/emacs.git/tree/ChangeLog.4 Release Notes
- https://git.savannah.gnu.org/cgit/emacs.git/tree/etc/NEWS?h=emacs-30.1 Product
- https://news.ycombinator.com/item?id=42256409 Issue Tracking
- https://yhetil.org/emacs/CAFXAjY5f4YfHAtZur1RAqH34UbYU56_t6t2Er0YEh1Sb7-W=hg@mail.gmail.com/ Mailing List
- http://www.openwall.com/lists/oss-security/2026/08/20/3 www.openwall.com
- http://www.openwall.com/lists/oss-security/2026/08/20/7 www.openwall.com
- http://www.openwall.com/lists/oss-security/2026/09/14/1 www.openwall.com
- http://www.openwall.com/lists/oss-security/2026/09/21/9 www.openwall.com
- https://lists.debian.org/debian-lts-announce/2025/02/msg00033.html lists.debian.org