UBUNTU-CVE-2026-42851

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Source
https://ubuntu.com/security/CVE-2026-42851
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42851.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-42851
Upstream
Downstream
Related
Published
2026-06-12T20:16:00Z
Modified
2026-09-15T20:16:39Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.0, a program able to write bytes to a kitty terminal — a remote SSH peer, a downloaded file viewed with cat, a log line, an email body rendered in less, an issue body in a TUI, etc. — can cause kitty to execute attacker-supplied Python inside the running kitty process, with the user's full privileges. There is no approval prompt, no remote-control permission requirement, no shell-integration interaction, no clipboard touch, and no editor interaction. Version 0.47.0 fixes the issue.

References

Affected packages

Ubuntu:Pro:24.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.32.2-1ubuntu0.4+esm2

Affected versions

0.*
0.26.5-3ubuntu2
0.26.5-5ubuntu1
0.31.0-3
0.31.0-4
0.32.2-1
0.32.2-1build2
0.32.2-1build3
0.32.2-1ubuntu0.1
0.32.2-1ubuntu0.2
0.32.2-1ubuntu0.3
0.32.2-1ubuntu0.4
0.32.2-1ubuntu0.4+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "kitty",
            "binary_version": "0.32.2-1ubuntu0.4+esm2"
        },
        {
            "binary_name": "kitty-shell-integration",
            "binary_version": "0.32.2-1ubuntu0.4+esm2"
        },
        {
            "binary_name": "kitty-terminfo",
            "binary_version": "0.32.2-1ubuntu0.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42851.json"

Ubuntu:25.10 / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=questing

Affected ranges

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

Affected versions

0.*
0.39.1-1
0.41.1-2
0.41.1-2+deb13u1build0.25.10.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "kitty",
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1"
        },
        {
            "binary_name": "kitty-shell-integration",
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1"
        },
        {
            "binary_name": "kitty-terminfo",
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42851.json"

Ubuntu:Pro:26.04:LTS / kitty

Package

Name
kitty
Purl
pkg:deb/ubuntu/kitty?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.45.0-1ubuntu0.1~esm2

Affected versions

0.*
0.41.1-2
0.43.1-1
0.44.0-1
0.45.0-1
0.45.0-1build1
0.45.0-1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "kitty",
            "binary_version": "0.45.0-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "kitty-shell-integration",
            "binary_version": "0.45.0-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "kitty-terminfo",
            "binary_version": "0.45.0-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42851.json"