USN-8958-1: .NET vulnerabilities
USN-8958-1
Summary
It was discovered that kitty incorrectly escaped error messages when handling specially crafted terminal escape sequences. A remote attacker could possibly use this issue to execute arbitrary commands. (CVE-2026-42850)
It was discovered that kitty incorrectly handled remote edit requests in terminal output. An attacker could possibly use this issue to execute arbitrary code with the user's privileges. (CVE-2026-42851) Thai Son Dinh and Nguyen Huy Vu Dung discovered that kitty incorrectly handled destination paths in its file transmission protocol. A local attacker could possibly use this issue to overwrite arbitrary files with the user's privileges. (CVE-2026-54055)
It was discovered that kitty incorrectly sanitized responses to color queries. An attacker could possibly use this issue to execute arbitrary commands with the user's privileges. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-54057)
Products covered
A separate affected-products list was not included in the collected bulletin.
Remediation
Separate remediation guidance was not included in the collected bulletin.
CVEs in this advisory 4
Updates
- Published by Ubuntu
The publication date reported by the vendor.
- Added to SecurityAlert
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- Confirmed at the source
Our collector saw this advisory during a later source check.