---
title: "CVE-2026-108976: GNU Emacs - Command Injection"
description: "GNU Emacs before 31.2 and TRAMP through 2.8.2 contain a command injection caused by an incomplete list of disallowed inputs in tramp-user-regexp, letting attackers execute OS commands via crafted filenames, exploit requires crafted filename input."
url: https://panop.io/threat-heartbeat/CVE-2026-108976/
---

# CVE-2026-108976 GNU Emacs - Command Injection

GNU Emacs before 31.2 and TRAMP through 2.8.2 contain a command injection caused by an incomplete list of disallowed inputs in tramp-user-regexp, letting attackers execute OS commands via crafted filenames, exploit requires crafted filename input.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.51% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-108976)

## Details

Type

Command Injection

Impact

Command Injection, Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

11 October 2026

Updated

15 October 2026

Weakness

[CWE-184](https://cwe.mitre.org/data/definitions/184.html)

## Vendor fix

Update to GNU Emacs 31.2 or later and TRAMP 2.8.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-108976](https://nvd.nist.gov/vuln/detail/CVE-2026-108976)
- [https://www.openwall.com/lists/oss-security/2026/10/11/1](https://www.openwall.com/lists/oss-security/2026/10/11/1)
- [https://ftp.gnu.org/gnu/tramp/tramp-2.8.2.tar.gz](https://ftp.gnu.org/gnu/tramp/tramp-2.8.2.tar.gz)
- [https://www.openwall.com/lists/oss-security/2026/08/21/1](https://www.openwall.com/lists/oss-security/2026/08/21/1)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)