CVE-2026-96442Emacs: emacs: arbitrary code execution in flymake mode
Updated under an hour ago ()
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It affects GNU Emacs and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GNU Emacs GNU Emacs gnu_emacs:gnu_emacs (from the name) | before 31.2 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 1:29.4-14.el10_2.3 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:84591vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-96442vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2537347issue-tracking, x-refsource-redhat
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.