CVE catalog

CVE-2026-80430

Severity: Medium · CVSS 4.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Sep 25, 2026, 1:08:13 PM UTC
Updated: Sep 25, 2026, 2:17:19 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.15% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	kitty	sid	`0.48.2-1.1`	vulnerable
Debian	kitty	forky	`0.48.2-1.1`	vulnerable
Debian	kitty	trixie	`0.41.1-2+deb13u2`	vulnerable
Debian	kitty	trixie-security	`0.41.1-2+deb13u2`	vulnerable
Debian	kitty	bookworm	`0.26.5-5`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	kitty	source	sid	`(unfixed)`	not yet assigned	Not reported	[1149729]
Debian	kitty	source	forky	`(unfixed)`	not yet assigned	Not reported	[1149729]
Debian	kitty	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1149729]
Debian	kitty	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1149729]

[Debian bug #1149729]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[kitty]Affected
Details (2)
- 0.26.5-5 · amd64 · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
- 0.26.5-5 · arm64 · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
[kitty-doc]Affected
Source package: [kitty]
Details (2)
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
[kitty-shell-integration]Affected
Source package: [kitty]
Details (2)
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
[kitty-terminfo]Affected
Source package: [kitty]
Details (2)
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12
- 0.26.5-5 · all · bookworm
  Affected
  nvd · kitty · debian · bookworm; nvd · kitty · debian · 12

[Debian 13 (Trixie)]

[kitty]Affected
Details (4)
- 0.41.1-2+deb13u1 · amd64 · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u1 · arm64 · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · amd64 · trixie-security
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · arm64 · trixie-security
  Affected
  nvd · kitty · debian · 13
[kitty-doc]Affected
Source package: [kitty]
Details (4)
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13
[kitty-shell-integration]Affected
Source package: [kitty]
Details (4)
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13
[kitty-terminfo]Affected
Source package: [kitty]
Details (4)
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u1 · all · trixie
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13
- 0.41.1-2+deb13u2 · all · trixie-security
  Affected
  nvd · kitty · debian · 13

Observed: Oct 27, 2026, 5:02:14 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]