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 tha…
High CVSS 7.8
Summary
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.)
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- 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
- https://lists.debian.org/debian-lts-announce/2025/02/msg00033.html
Timeline
- nvd_ingest NVD