ubuntu-cve-2026-42851
Vulnerability from osv_ubuntu
Published
2026-06-12 20:16
Modified
2026-06-17 18:26
Summary
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.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kitty",
            "binary_version": "0.15.0-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "kitty-terminfo",
            "binary_version": "0.15.0-1ubuntu0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "kitty",
        "purl": "pkg:deb/ubuntu/kitty@0.15.0-1ubuntu0.2+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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",
        "0.15.0-1ubuntu0.2+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kitty",
            "binary_version": "0.21.2-1ubuntu0.22.04.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "kitty",
        "purl": "pkg:deb/ubuntu/kitty@0.21.2-1ubuntu0.22.04.1+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.19.3-1",
        "0.21.2-1",
        "0.21.2-1build1",
        "0.21.2-1ubuntu0.22.04.1",
        "0.21.2-1ubuntu0.22.04.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "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",
            "binary_version": "0.32.2-1ubuntu0.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "kitty",
        "purl": "pkg:deb/ubuntu/kitty@0.32.2-1ubuntu0.4+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": {
        "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "kitty",
        "purl": "pkg:deb/ubuntu/kitty@0.41.1-2+deb13u1build0.25.10.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.39.1-1",
        "0.41.1-2",
        "0.41.1-2+deb13u1build0.25.10.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kitty",
            "binary_version": "0.45.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kitty-shell-integration",
            "binary_version": "0.45.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "kitty-terminfo",
            "binary_version": "0.45.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "kitty",
        "purl": "pkg:deb/ubuntu/kitty@0.45.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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"
      ]
    }
  ],
  "aliases": [],
  "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 \u2014 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. \u2014 can cause kitty to execute attacker-supplied Python inside the running kitty process, with the user\u0027s 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.",
  "id": "UBUNTU-CVE-2026-42851",
  "modified": "2026-06-17T18:26:15Z",
  "published": "2026-06-12T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42851"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42851"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-w98g-hpvr-r332"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-42851"
  ]
}



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