Is CVE-2026-54057 in the CISA KEV catalog?

No. CVE-2026-54057 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-54057?

CVE-2026-54057 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2026-54057?

CVE-2026-54057 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54057?

Upgrade kitty on debian unstable to 0.47.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-54057

HIGH

7.8

CVSS v3

NVD

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.

CWE-94Code Injection CWE-150

How to fix

Remediation Available

kittyDebian

Fixed in:0.47.3-1CVE-2026-54057

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Exploit1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-16.