CVE-2026-54057

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 v3.1 Score

7.8

HIGH

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

EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-94 CWE-94

CWE-150 CWE-150

Affected Products

Vendor	Product	Versions
kovidgoyal	kitty	< 0.47.3

References

Advisories & Patches

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

Exploits

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

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-54057? +

CVE-2026-54057 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0017, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-54057? +

CVE-2026-54057 affects products from kovidgoyal, specifically: kitty. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-54057? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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