CVE-2026-6390

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.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.3 / Impact : 5.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-6390
https://bugzilla.redhat.com/show_bug.cgi?id=2458767

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-23 05:16

Updated : 2026-09-01 13:19

NVD link : CVE-2026-6390

Mitre link : CVE-2026-6390

CVE.ORG link : CVE-2026-6390

JSON object : View

Products Affected

No product.

CWE

CWE-134

Use of Externally-Controlled Format String

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