CVE-2026-6843

medium

Published 2026-04-22 · Modified 2026-05-20

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CVSS v3

5.5

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

5.5

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.

Predictions

Exploit likelihood

55%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

Red Hat Affected 5 releases

Version	Status	Fixed in
10.0	Affected	—
9.0	Affected	—
8.0	Affected	—
7.0	Affected	—
6.0	Affected	—

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`8.4-1+deb13u1`
sid	Fixed	`9.0-1`
forky	Fixed	`9.0-1`
bullseye	Affected	—
bookworm	Affected	—

Application impact

Vendor	Product	Versions	Fixed
gnu	nano	`8.7`
redhat	openshift_container_platform	`4.0`

References

CWEs

CWE-134

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.