VULNERABILITY INTELLIGENCE
CVE-2026-6390
CVSS score6.8 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-07-23
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H
Description
A flaw was found in GNU nano's multi-buffer error message handling. When a user opens multiple files at startup and one triggers an ALERT-level error, a specially crafted filename containing printf format specifiers can be reinterpreted. This format string vulnerability may allow an attacker to achieve stack information disclosure, cause a denial of service (crash), or potentially perform arbitrary memory writes.
Weakness classification
- secalert@redhat.com: CWE-134