CVE-2026-108976

emacs: zero-click local command execution via TRAMP

Published Oct 11, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
GNU Emacs before 31.2 (and TRAMP through 2.8.2) allows OS command injection via a filename because tramp-user-regexp has an incomplete list of disallowed inputs. NOTE: this issue exists because of an incomplete fix for CVE-2026-79992.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title OS Command Injection in Emacs TRAMP via Filename emacs: zero-click local command execution via TRAMP
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title OS Command Injection in Emacs TRAMP via Filename
Type Values Removed Values Added
Description GNU Emacs before 31.2 (and TRAMP through 2.8.2) allows OS command injection via a filename because tramp-user-regexp has an incomplete list of disallowed inputs. NOTE: this issue exists because of an incomplete fix for CVE-2026-79992.
First Time appeared Gnu
Gnu emacs
Weaknesses CWE-184
CPEs cpe:2.3:a:gnu:emacs:*:*:*:*:*:*:*:*
Vendors & Products Gnu
Gnu emacs
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 15, 2026, 6:08 PM
Reserved
Oct 11, 2026, 8:11 PM
Status
Awaiting Analysis
Published
Oct 11, 2026, 9:16 PM
Modified
Oct 16, 2026, 5:25 PM
Severity
Important
Public date
Oct 11, 2026, 8:11 PM