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Solution
No solution given by the vendor.
Workaround
Users should avoid opening untrusted files with GNU nano, especially those with filenames containing printf format specifiers (e.g., %s, %p, %n). This operational control helps prevent the exploitation of the format string vulnerability, which relies on specific filename content and error conditions during multi-buffer usage.
Thu, 23 Jul 2026 14:30:00 +0000
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Thu, 23 Jul 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Thu, 23 Jul 2026 05:00:00 +0000
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| 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. | |
| Title | Nano: gnu nano: arbitrary memory writes, information disclosure, or denial of service via format string vulnerability in error handling. | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Weaknesses | CWE-134 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-07-23T13:43:29.133Z
Reserved: 2026-04-15T19:42:07.154Z
Link: CVE-2026-6390
Updated: 2026-07-23T13:43:23.087Z
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OpenCVE Enrichment
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