High severity · published Jun 12, 2026
CVE-2026-54057
Kitty vulnerable to command injection via unsanitized OSC 21 query reply
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
kitty · kovidgoyal
< 0.47.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54057
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54057
Exploit
https://github.com/kovidgoyal/kitty/security/advisories/GHSA-5gmr-9gwg-hhq6
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