Improper Neutralization of Escape, Meta, or Control Sequences in kitty - CVE-2026-54057

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Main Vulnerability Database Vulnerabilities #VU151617

Improper Neutralization of Escape, Meta, or Control Sequences in kitty - CVE-2026-54057

Published: September 22, 2026


Vulnerability identifier: #VU151617
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54057
CWE-ID: CWE-150
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary commands.

The vulnerability exists due to improper neutralization of escape, meta, or control sequences in OSC 21 color-control query reply handling when processing a crafted OSC 21 query reply. A remote attacker can provide a query containing newline characters to execute arbitrary commands.

User interaction is required to process crafted terminal content.


Affected software

kitty
Debian Linux
kitty (Debian package)

How to mitigate CVE-2026-54057

Install security update from vendor's website.

kitty - update to 0.47.3
kitty (Debian package) - update to 0.41.1-2+deb13u2

External References

Related Security Bulletins