CVE-2026-80430

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Source

https://cve.org/CVERecord?id=CVE-2026-80430

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80430.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-80430

Downstream

DEBIAN-CVE-2026-80430

Published

2026-09-25T13:08:13Z

Modified

2026-09-27T08:04:15Z

Severity

4.6 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

Improper link resolution in the kitty drag and drop protocol allows a client to create files outside the staging directory

Details

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.

Database specific

{
    "cna_assigner":  "Secur0",
    "cwe_ids":  [
        "CWE-59"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80430.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "0.47.0"
                },
                {
                    "fixed":  "0.49.0"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "0.47.0"
                },
                {
                    "fixed":  "0.49.0"
                }
            ],
            "source":  "CPE_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "0.47.0"
                },
                {
                    "fixed":  "0.49.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

References

Affected packages

Git / github.com/kovidgoyal/kitty

Affected ranges

Type

GIT

Repo

https://github.com/kovidgoyal/kitty

Events

Introduced

Fixed

3c3133d3399257492347f535d8d191680803b25d

Fixed

554908ed0b4d010cf9821c75449c7f7c79a6170a

Fixed

07ed6aa3de28af2a01e521f18c56ed292aa34cfc

Database specific

Show details

{
    "source":  "REFERENCES"
}

Affected versions

Other

nightly

v0.*

v0.1.0

v0.10.0

v0.10.1

v0.11.0

v0.11.1

v0.11.2

v0.11.3

v0.12.0

v0.12.1

v0.12.2

v0.12.3

v0.13.0

v0.13.1

v0.13.2

v0.13.3

v0.14.0

v0.14.1

v0.14.2

v0.14.3

v0.14.4

v0.14.5

v0.14.6

v0.15.0

v0.15.1

v0.16.0

v0.17.0

v0.17.1

v0.17.2

v0.17.3

v0.17.4

v0.18.0

v0.18.1

v0.18.2

v0.18.3

v0.19.0

v0.19.1

v0.19.2

v0.19.3

v0.2.0

v0.2.1

v0.2.2

v0.2.3

v0.2.4

v0.2.5

v0.2.6

v0.2.7

v0.2.8

v0.20.0

v0.20.1

v0.20.2

v0.20.3

v0.21.0

v0.21.1

v0.21.2

v0.22.0

v0.22.1

v0.22.2

v0.23.0

v0.23.1

v0.24.0

v0.24.1

v0.24.2

v0.24.3

v0.24.4

v0.25.0

v0.25.1

v0.25.2

v0.26.0

v0.26.1

v0.26.2

v0.26.3

v0.26.4

v0.26.5

v0.27.0

v0.27.1

v0.28.0

v0.28.1

v0.29.0

v0.29.1

v0.29.2

v0.3.0

v0.30.0

v0.30.1

v0.31.0

v0.32.0

v0.32.1

v0.32.2

v0.33.0

v0.33.1

v0.34.0

v0.34.1

v0.35.0

v0.35.1

v0.35.2

v0.36.0

v0.36.1

v0.36.2

v0.36.3

v0.36.4

v0.37.0

v0.38.0

v0.38.1

v0.39.0

v0.39.1

v0.4.0

v0.4.1

v0.4.2

v0.40.0

v0.40.1

v0.41.0

v0.41.1

v0.42.0

v0.42.1

v0.42.2

v0.43.0

v0.43.1

v0.44.0

v0.45.0

v0.46.0

v0.46.1

v0.46.2

v0.47.0

v0.47.1

v0.47.2

v0.47.3

v0.47.4

v0.48.0

v0.48.1

v0.48.2

v0.5.0

v0.5.1

v0.6.0

v0.6.1

v0.7.0

v0.7.1

v0.8.0

v0.8.1

v0.8.2

v0.8.3

v0.8.4

v0.9.0

v0.9.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80430.json"

vanir_signatures

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vanir_signatures_modified

"2026-09-27T08:04:15Z"