High severity · published Oct 11, 2026
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
7.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EM
Emacs · GNU
before 31.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108976
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108976
product
https://ftp.gnu.org/gnu/tramp/tramp-2.8.2.tar.gz
patch
https://www.openwall.com/lists/oss-security/2026/10/11/1
related
https://www.openwall.com/lists/oss-security/2026/08/21/1
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