CVE-2026-6861
Emacs: emacs: memory corruption vulnerability when processing svg css
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.
INFO
Published Date :
April 22, 2026, 2:17 p.m.
Last Modified :
May 6, 2026, 8:27 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update GNU Emacs to the latest version.
- Avoid opening untrusted SVG files.
- Apply vendor patches when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6861.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-6861 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2459992 | Issue Tracking Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6861 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6861
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6861 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6861 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:gnu:emacs:*:*:*:*:*:*:*:* versions from (including) 28.1 up to (including) 30.2 Added Reference Type Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-6861 Types: Third Party Advisory Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2459992 Types: Issue Tracking, Third Party Advisory -
New CVE Received by [email protected]
Apr. 22, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H Added CWE CWE-193 Added Reference https://access.redhat.com/security/cve/CVE-2026-6861 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2459992