USN-8442-1

It was discovered that kitty incorrectly handled certain image data. An attacker able to write to the terminal's input could possibly use this issue to cause kitty to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-33633)

It was discovered that kitty incorrectly handled certain graphics commands. An attacker able to write escape sequences to a kitty terminal could possibly use this issue to cause kitty to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-33642)

References

Affected packages

Ubuntu:Pro:20.04:LTS / kitty

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.15.0-1ubuntu0.2+esm1

Affected versions

0.*

0.14.3-1

0.14.4-1

0.14.6-1

0.15.0-1

0.15.0-1build1

0.15.0-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.15.0-1ubuntu0.2+esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.15.0-1ubuntu0.2+esm1",
            "binary_name": "kitty-terminfo"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8442-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33633"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33642"
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}

Ubuntu:Pro:22.04:LTS / kitty

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.21.2-1ubuntu0.22.04.1+esm1

Affected versions

0.*

0.19.3-1

0.21.2-1

0.21.2-1build1

0.21.2-1ubuntu0.22.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.21.2-1ubuntu0.22.04.1+esm1",
            "binary_name": "kitty"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8442-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33633"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33642"
        }
    ],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}

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

0Unknown introduced version / All previous versions are affected

Fixed

0.32.2-1ubuntu0.4+esm1

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

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty-shell-integration"
        },
        {
            "binary_version": "0.32.2-1ubuntu0.4+esm1",
            "binary_name": "kitty-terminfo"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8442-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33633"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33642"
        }
    ],
    "ecosystem": "Ubuntu:Pro:24.04:LTS"
}

Ubuntu:25.10 / kitty

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.41.1-2+deb13u1build0.25.10.1

Affected versions

0.*

0.39.1-1

0.41.1-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.41.1-2+deb13u1build0.25.10.1",
            "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8442-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33633"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33642"
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}

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

0Unknown introduced version / All previous versions are affected

Fixed

0.45.0-1ubuntu0.1~esm1

Affected versions

0.*

0.41.1-2

0.43.1-1

0.44.0-1

0.45.0-1

0.45.0-1build1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty"
        },
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty-shell-integration"
        },
        {
            "binary_version": "0.45.0-1ubuntu0.1~esm1",
            "binary_name": "kitty-terminfo"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8442-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33633"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-33642"
        }
    ],
    "ecosystem": "Ubuntu:Pro:26.04:LTS"
}