CVE-2026-6390 - Nano: gnu nano: arbitrary memory writes, information disclosure, or denial of service via format string vulnerability in error handling.

CVE-2026-6390 - Nano: gnu nano: arbitrary memory writes, information disclosure, or denial of service via format string vulnerability in error handling.

https://cvefeed.io/rssfeed/latest.atom / Thu, 07/23/2026 - 10:07
CVE ID :CVE-2026-6390
Published : July 23, 2026, 5:16 a.m. | 1 hour, 33 minutes ago
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.
Severity: 6.8 | MEDIUM
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