CVE-2024-30205

What it actually does

Org mode treats the contents of remote files as trusted input without validation, allowing execution of embedded code or directives from untrusted remote sources in vulnerable Emacs versions.

Why it matters to the business

Organizations using Emacs for document editing face risk of system compromise or data exposure when users interact with remote Org files, increasing the chance of unauthorized code execution and potential supply-chain style attacks through shared documents.

How an attack unfolds

An attacker hosts a malicious Org file containing executable directives or code on a remote server or repository; the victim opens or loads the file in a vulnerable Emacs Org mode instance, which processes the remote content as trusted and executes the attacker's payload.

How to fix it

Upgrade Emacs to version 29.3 or later and Org mode to 9.6.23 or later; for the org-mode git repository apply commit 4255d5dcc0657915f90e4fba7e0a5514cced514d.

How to confirm the fix worked

Verify Emacs version is at least 29.3 and Org mode version is at least 9.6.23; confirm the git commit hash in the org-mode repository matches or exceeds 4255d5dcc0657915f90e4fba7e0a5514cced514d.

Typical attack path

1. Attacker crafts malicious Org file with executable content or links
2. Attacker hosts the file on a publicly accessible remote location
3. Victim opens the remote file using vulnerable Emacs Org mode
4. Org mode processes the remote content without validation and executes the payload

How to detect it

Review Emacs and Org mode version logs or configuration files for pre-29.3 / pre-9.6.23 instances; examine user activity logs for opening of remote Org files and correlate with unexpected process execution or network connections initiated from Emacs.

What your security team should do

• Immediately update all Emacs installations to the fixed versions
• Scan for and restrict use of remote Org files until patches are applied
• Monitor EPSS score and threat intelligence feeds for any increase in exploitation activity