UBUNTU-CVE-2026-121549

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Source
https://ubuntu.com/security/CVE-2026-121549
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121549
Upstream
Published
2026-11-03T16:17:00Z
Modified
2026-11-05T11:45:29Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
  • 4.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

nnn through 5.3 contains an insecure temporary file vulnerability in the pdfread and nuke plugins that allows local attackers to overwrite files by exploiting predictable paths in /tmp. Attackers can pre-create a symlink at the name-derived or PID-derived path so the victim's plugin truncates and overwrites any file the victim can write.

References

Affected packages

Ubuntu:18.04:LTS
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3-2
1.5-1
1.6-1
1.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "1.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"
Ubuntu:20.04:LTS
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.6-1
2.7-1
2.8-1
2.8.1-1
2.9-1
3.*
3.0-1
3.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "3.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"
Ubuntu:22.04:LTS
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.5-1
4.*
4.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "4.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"
Ubuntu:24.04:LTS
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.8-1
4.9-1
4.9-1build1
4.9-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "4.9-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"
Ubuntu:26.04:LTS
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.0-1
5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "5.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"
Ubuntu:26.10
nnn

Package

Name
nnn
Purl
pkg:deb/ubuntu/nnn?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.1-1
5.2-1
5.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "5.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121549.json"