CVE-2026-6843

April 22, 2026, 9:23 p.m.

5.5
Medium

Description

A flaw was found in nano. A local user could exploit a format string vulnerability in the `statusline()` function. By creating a directory with a name containing `printf` specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the `nano` application.

Product(s) Impacted

Vendor Product Versions
Redhat
  • Nano
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-134
Use of Externally-Controlled Format String
The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a redhat nano / / / / / / / /

References

https://access.redhat.com/security/cve/CVE-2026-6843
https://bugzilla.redhat.com/show_bug.cgi?id=2460017

Tags

[email protected]
CWE-134
2026-04-22
CVE-2026-6843

CVSS Score

5.5 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH

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

    View Vector String

Timeline

Published: April 22, 2026, 9:16 a.m.
Last Modified: April 22, 2026, 9:23 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.