CVE•Published 2026-04-22•Modified 2026-05-20•0 articles on news•6 live references•NVD data

CVE-2026-6843Gnu · Nano

Vulnerability data via NVD (ingested)

CVSS v3.1

5.5

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 95% of all CVEs

Weaknesses (CWE)

CWE-134Use of Externally-Controlled Format String

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.

Timeline

Published 2026-04-22

Modified 2026-05-20

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-6843

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product + version

product:"Gnu Nano" version:"8.7"

Version-pinned fingerprint from NVD's first vulnerable CPE.

Shodan · banner/body mention

http.html:"Nano"

HTTP body or banner mentions "Nano" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-6843