CVE-2026-6861 PUBLISHED

Emacs: emacs: memory corruption vulnerability when processing svg css

Assigner: redhat
Reserved: 22.04.2026 Published: 22.04.2026 Updated: 22.04.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS Score: 6.1

Product Status

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Versions Default: unknown
Vendor Red Hat
Product Red Hat Enterprise Linux 6
Versions Default: unknown
Vendor Red Hat
Product Red Hat Enterprise Linux 7
Versions Default: unknown
Vendor Red Hat
Product Red Hat Enterprise Linux 8
Versions Default: unknown
Vendor Red Hat
Product Red Hat Enterprise Linux 9
Versions Default: unknown

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Credits

  • Red Hat would like to thank Gaetano Zappulla (Tinexta Defence SpA) for reporting this issue.

References

Problem Types

  • Off-by-one Error CWE