🛡️ CVE-2026-6842 on Debian — nano

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in nano. In environments with permissive umask settings, a local attacker can exploit incorrect directory permissions (0777 instead of 0700) for the ~/.local directory. This allows the attacker to inject a malicious .desktop launcher, which could lead to unintended actions or information disclosure if the launcher is subsequently processed.

Distribution advisory

This page covers CVE-2026-6842 as tracked by Debian, for the package nano. The fix is available in version 9.0-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

DEBIAN-CVE-2026-6842 is classified as CWE-732: Incorrect Permission Assignment for Critical Resource. A sensitive resource is assigned permissions that let unintended actors read or modify it.

Affected software

DEBIAN-CVE-2026-6842 is recorded against 1 package.

  • nano (fixed in 9.0-1)

Timeline and source

Published on 22 April 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2026-6842 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-04-22
Updated 2026-08-12
Modified 2026-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
nano — 9.0-1

Similar Threats

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