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Vulnerability record · CVE-2026-96442 · published 23 September 2026

CVE-2026-96442: Code injection vulnerability

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.

7.8 CVSS 3.1 High EPSS 0.17% · top 94.8% CWE-94 · Code injection Awaiting Analysis
7.8CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
24 Sep 2026Last modified by NVD

Description

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-96442
https://bugzilla.redhat.com/show_bug.cgi?id=2537347
https://github.com/emacs-mirror/emacs/commit/135e6f63f08fee3d374fa1a5187bce941a2d3e3c
https://github.com/emacs-mirror/emacs/commit/abc802ee2eb0b1663349ddf22a461f8e54a383fb
https://www.openwall.com/lists/oss-security/2026/09/14/1

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Source: NIST National Vulnerability Database (record CVE-2026-96442), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.