VulnerabilityAnalyzed

CVE-2026-6843

A local user could exploit a format string vulnerability in the `statusline()` function.

MEDIUM 5.5EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS: 0.11% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-134
Affected: gnu/nano · redhat/openshift container platform · redhat/enterprise linux
Source: secalert@redhat.com

References

https://access.redhat.com/security/cve/CVE-2026-6843Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460017Issue Tracking, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.