Vulnerability · Published Apr 22, 2026 · Assigned by redhat
CVE-2026-6861Emacs: emacs: memory corruption vulnerability when processing svg css
Medium 6.1
In plain English
A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | emacs | no fix listed | DEBIAN-CVE-2026-6861 |
| Debian:13 | emacs | 1:30.1+1-6+deb13u1 | DEBIAN-CVE-2026-6861 |
| Debian:14 | emacs | 1:30.2+1-3 | DEBIAN-CVE-2026-6861 |
| Ubuntu:25.10 | emacs | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:26.10 | emacs | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:22.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:24.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:25.10 | xemacs21 | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:26.04:LTS | xemacs21 | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:26.10 | xemacs21 | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:22.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:24.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:25.10 | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:26.04:LTS | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-6861 |
| Ubuntu:26.10 | xemacs21-packages | no fix listed | UBUNTU-CVE-2026-6861 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
References
- https://access.redhat.com/security/cve/CVE-2026-6861 vdb-entry, x_refsource_REDHAT
- RHBZ#2459992 issue-tracking, x_refsource_REDHAT