CVE-2026-108976: gnu emacs Incomplete List of Disallowed Inputs
CVSS: 7.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-108976
Published 11-10-2026Last modified 15-10-2026
Vulnerability summary
CVE-2026-108976 is a high (CVSS 7.8) Incomplete List of Disallowed Inputs vulnerability in gnu emacs. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 41.9% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.51%
0%100%
Low · Change unavailableKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-10-2026PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
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 metrics
3 scores · 3 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
12-10-202620-10-2026
EPSS score0.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu5 products
- emacsAll versions (No fix recorded)
- emacs24All versions (No fix recorded)
- emacs25All versions (No fix recorded)
- xemacs21All versions (No fix recorded)
- xemacs21-packagesAll versions (No fix recorded)
Gnu1 product
- emacs< 31.2
2 vendors · 6 products