CVE-2024-53920

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.)

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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
https://lists.debian.org/debian-lts-announce/2025/02/msg00033.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:emacs:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-11-27 15:15

Updated : 2025-11-03 21:17

NVD link : CVE-2024-53920

Mitre link : CVE-2024-53920

CVE.ORG link : CVE-2024-53920

JSON object : View

Products Affected

gnu

emacs

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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