High severity · published Apr 22, 2026
CVE-2026-6861
Emacs: emacs: memory corruption vulnerability when processing svg css
7.1
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
EM
Emacs · Gnu
28.1 through 30.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6861
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6861
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-6861
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2459992
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