Vulnerability · Published Oct 11, 2026 · Assigned by mitre
CVE-2026-108976
High 7.8
In plain English
A high-severity security flaw in Emacs from GNU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.6%top 48.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:26.10 | emacs | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:22.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:24.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:26.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:26.10 | xemacs21 | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:22.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:24.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:26.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-108976 |
| Ubuntu:26.10 | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-108976 |
Affected products (as reported)
Weakness: CWE-184 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H