CVE catalog

CVE-2026-95832

Severity: Critical · CVSS 9.3CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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, 12:54:25 PM UTC
Updated: Sep 25, 2026, 1:17:24 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.16% · Oct 25, 2026

Improper Neutralization of Special Elements in Output Used by a Downstream Component in the colour control escape code handler in kitty from 0.47.3 before 0.49.0 allows a program writing to the terminal to execute an arbitrary command in the user's shell, because color_control() in kitty/window.py answers a query for an unrecognised field name by placing that field name into the reply, and write_escape_code_to_child() in kitty/screen.c then writes the reply to the pseudoterminal master, where it is not distinguishable from input typed by the user, without neutralising it for the shell that reads it. The payload is reduced to printable ASCII before the field name is echoed, which is the restriction introduced in 0.47.3 as the fix for CVE-2026-54057, and the record and field separators ; and = are consumed as delimiters, but every other printable character survives, which is sufficient to compose a shell command. A newline is available from handle_remote_ssh() in kitty/window.py, which writes the bytes yielded by get_ssh_data() in kittens/ssh/utils.py, the first of which begin with a newline, to the pseudoterminal master before any credential carried in the request is checked. The reply is framed as an OSC sequence carrying the escape code number, the field name, and the literal value ?. This results in execution of an attacker-chosen command with the privileges of the user running the terminal.

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, 5:02:15 AM UTC

References

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