How severe is CVE-2026-54057?

CVE-2026-54057 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-54057 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54057?

CVE-2026-54057 affects Kovidgoyal Kitty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-54057?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-54057 have an EU (EUVD) identifier?

Yes. CVE-2026-54057 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36579.

When was CVE-2026-54057 published?

CVE-2026-54057 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-54057

CVE-2026-54057 is a high-severity vulnerability in Kovidgoyal Kitty with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 7.3
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36579
Weakness: CWE-94
Affected product: Kovidgoyal Kitty
Published: 2026-06-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-54057?: 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.
How severe is CVE-2026-54057?: CVE-2026-54057 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-54057 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54057?: CVE-2026-54057 affects Kovidgoyal Kitty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-54057?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-54057 have an EU (EUVD) identifier?: Yes. CVE-2026-54057 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36579.
When was CVE-2026-54057 published?: CVE-2026-54057 was published on 2026-06-12 and last updated on 2026-06-17.

References

https://github.com/kovidgoyal/kitty/security/advisories/GHSA-5gmr-9gwg-hhq6

Affected products (1)

cpe:2.3:a:kovidgoyal:kitty:*:*:*:*:*:*:*:*

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