What is CVE-2026-108976?

CVE-2026-108976 is a high-severity vulnerability in GNU Emacs, classified under Incomplete List of Disallowed Inputs. CVSS score: 7.8/10. Published 2026-10-11.

How severe is CVE-2026-108976?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in GNU Emacs

CVE-2026-108976

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.

Published 2026-10-11.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

GNU Emacs

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

ftp.gnu.org/gnu/tramp/tramp-2.8.2.tar.gz (product)
www.openwall.com/lists/oss-security/2026/10/11/1 (patch)
www.openwall.com/lists/oss-security/2026/08/21/1 (related)

Frequently asked questions

What is CVE-2026-108976?: CVE-2026-108976 is a high-severity vulnerability in GNU Emacs, classified under Incomplete List of Disallowed Inputs. CVSS score: 7.8/10. Published 2026-10-11.
How severe is CVE-2026-108976?: High severity. CVSS v3 base score is 7.8 out of 10.