Skip to content
Fencer Vulns
high 7.8

CVE-2026-108976 json

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…

published 2026-10-11 28 d ago modified 2026-10-16 23 d ago also EUVD-2026-97124

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

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.

Patch / fix

  • GNU Emacs 31.2
  • emacs SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +9 more 27.2-150400.3.37.1

suse advisories SUSE-SU-2026:4893-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-108976 updated cvss 7.8

emacs: zero-click local command execution via TRAMP

  • Red Hat Enterprise Linux 6 emacs, emacs-el, emacs-nox, emacs-common
    affected: workaround, no fix planned “To mitigate this vulnerability, do not open or process untrusted filenames or interact with remote systems that may contain specially crafted filenames.”
  • Red Hat Enterprise Linux 7 emacs, emacs-el, emacs-nox, emacs-common, emacs-terminal, emacs-filesystem Red Hat Enterprise Linux 8 emacs, emacs-nox, emacs-lucid, emacs-common, emacs-terminal, emacs-filesystem Red Hat Enterprise Linux 9 emacs, emacs-nox, emacs-lucid, emacs-common, emacs-filesystem Red Hat Enterprise Linux 10 emacs
    affected: workaround, no fix available “To mitigate this vulnerability, do not open or process untrusted filenames or interact with remote systems that may contain specially crafted filenames.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
24 d ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • GNU Emacs

Classification

Weakness
  • CWE-184 Incomplete List of Disallowed Inputs

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.