Skip to content
Fencer Vulns
high 7.3

CVE-2026-72913 json

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

published 2026-08-10 2 mo ago modified 2026-10-23 16 d ago also EUVD-2026-55835

cvss
7.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

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.

Patch / fix

  • kitty_project kitty 0.48.2
  • kovidgoyal kitty 0.48.2
  • kitty Debian 14 0.48.2-1

debian advisories DEBIAN-CVE-2026-72913

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-72913 updated cvss 7.8

kitty: Kitty: Arbitrary Code Execution via Chained DCS Escape Sequences

  • Red Hat Enterprise Linux 9 gvisor-tap-vsock, gvisor-tap-vsock-gvforwarder, gvisor-tap-vsock 0.8.7-1.el10 Red Hat Enterprise Linux 10 gvisor-tap-vsock 0.8.7-1.el10
    affected: no fix available
  • Red Hat External Secrets Operator for Red Hat OpenShift external-secrets-operator/external-secrets-rhel9 Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/kovidgoyal/kitty/security/advisories/GHSA-ccp2-q4v6-rw94 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/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

Affected products

  • kovidgoyal kitty

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command
  • CWE-93 Improper Neutralization of CRLF Sequences
  • CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.