CVE-2026-54057: Kitty is a cross-platform GPU based terminal

Q: How do I fix CVE-2026-54057?

kitty: upgrade to 0.47.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-54057 being exploited?

CVE-2026-54057 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-54057 affect?

CVE-2026-54057 affects kitty. Severity is high (CVSS 7.8). Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.3, kitty's OSC 21 (color-control) query reply reflects attacker-controlled bytes, including newlines, into the shell's input without sanitization. Version 0.47.3 fixes

Q: How urgent is CVE-2026-54057?

Priority 34/100. High severity; Public exploit reference

Routine

HIGH 7.8UPGRADE

CVE-2026-54057 is a high-severity flaw (CVSS 7.8) affecting kitty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.3, kitty's OSC 21 (color-control) query reply reflects attacker-controlled bytes, including newlines, into the shell's input without sanitization. Version 0.47.3 fixes the issue.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-94, CWE-150
Published	2026-06-12
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: kovidgoyal

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-12 21:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

kovidgoyal kitty UPGRADE

Affected: < 0.47.3

Fixed in: 0.47.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kitty || rpm -q kitty || kitty --version

2. UPGRADE to 0.47.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kitty

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kitty

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54057?

kitty: upgrade to 0.47.3. Exact commands for each OS are on this page.

Is CVE-2026-54057 being exploited?

CVE-2026-54057 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54057 affect?

CVE-2026-54057 affects kitty. Severity is high (CVSS 7.8). Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.3, kitty's OSC 21 (color-control) query reply reflects attacker-controlled bytes, including newlines, into the shell's input without sanitization. Version 0.47.3 fixes

How urgent is CVE-2026-54057?

Priority 34/100. High severity; Public exploit reference

Related CVEs

CVE-2026-54056 HIGH 7.6 UPGRADE Kitty is a cross-platform GPU based terminal

References

← Back to latest CVEs