Kitty: Command injection into the child shell via chained @kitty-echo + @kitty-ssh DCS escape sequences (CVE-2026-72913) | HOL Guard CVE

High · CVSS 7.3CVE-2026-72913

Kitty: Command injection into the child shell via chained @kitty-echo + @kitty-ssh DCS escape sequences

Answer in brief

CVE-2026-72913 records a High severity (CVSS 7.3) vulnerability in Kitty: Command injection into the child shell via chained @kitty-echo + @kitty-ssh DCS escape sequences. The current sources do not mark it as known exploited. The current feed maps kovidgoyal/kitty (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Sep 9, 2026Source checked Sep 25, 2026First seen by HOL Aug 10, 2026Material review Sep 9, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kovidgoyal/kitty (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
kovidgoyal/kittygeneric	< 0.48.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for kovidgoyal/kitty.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

Kitty is a cross-platform GPU based terminal. Prior to 0.48.2, the @kitty-echo and @kitty-ssh DCS handlers in kitty/window.py write unauthenticated data to the child shell's stdin, where handle_remote_echo accepts printable shell command characters and handle_remote_ssh calls get_ssh_data in kittens/ssh/utils.py, which emits a newline; chaining the handlers can execute attacker-controlled commands when a user displays untrusted terminal data. This issue is fixed in version 0.48.2.

Quoted source text, attributed separately from HOL analysis.