---
id: CVE-2026-80430
title: >-
  Improper Link Resolution Before File Access in the drag source staging path of
  the drag and drop protocol in kitty from 0.47.0 before 0.49.0 allows a program
  writing to the terminal to create files and directories at paths outside the
  st…
summary: >-
  Improper Link Resolution Before File Access in the drag source staging path of
  the drag and drop protocol in kitty from 0.47.0 before 0.49.0 allows a program
  writing to the terminal to create files and directories at paths outside the
  st…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N'
cwe:
  - CWE-59
vendor: Kovid Goyal
product: kitty
affected:
  - kitty >= 0.47.0 < 0.49.0
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T16:17:27.737'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80430'
references:
  - url: >-
      https://github.com/kovidgoyal/kitty/commit/3c3133d3399257492347f535d8d191680803b25d
    label: 4daa8cea-433a-44bd-9456-53b127fc289a
  - url: >-
      https://github.com/kovidgoyal/kitty/commit/554908ed0b4d010cf9821c75449c7f7c79a6170a
    label: 4daa8cea-433a-44bd-9456-53b127fc289a
  - url: 'https://github.com/kovidgoyal/kitty/releases/tag/v0.49.0'
    label: 4daa8cea-433a-44bd-9456-53b127fc289a
  - url: >-
      https://secur0.com/en/cna/cve-list/cve-2026-80430-kitty-dnd-symlink-traversal
    label: 4daa8cea-433a-44bd-9456-53b127fc289a
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80430.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80430'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80430'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T15:27:29.989878Z'
cvssSource: cna
ingestedAt: '2026-09-25T14:09:46.373Z'
scores:
  cna: 4.6
  vendor: 3.3
---

## Overview

Improper Link Resolution Before File Access in the drag source staging path of the drag and drop protocol in kitty from 0.47.0 before 0.49.0 allows a program writing to the terminal to create files and directories at paths outside the staging directory, because subdir_data_for_drag() in kitty/dnd.c resolves a descendant of the staged item tree by constructing a path string and opening it with safe_open(path, O_DIRECTORY | O_RDONLY, 0) rather than by walking the tree one component at a time, so a client that declares two entries with the same name, the first a symlink whose target is an arbitrary absolute path and the second a directory, causes mkdirat() to fail with EEXIST, which the code ignores, and causes the subsequent path resolution to follow the symlink and return a directory descriptor outside the staging directory, which is then passed as the dirfd argument to add_payload() and used for every further create operation on that item and its descendants. Entry names are sanitised against path separators and dot components, but symlink targets are not validated. Files are created with O_CREAT | O_WRONLY | O_EXCL at mode 0644, so existing files cannot be overwritten, and directories are created with mkdirat() at mode 0755, so the attacker can create intermediate directories that did not previously exist. This results in the creation of files and directories at any path writable by the user running kitty, provided the symlink target is an existing directory.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80430.json)