CVE-2026-45035

High

Description

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby registers itself as the handler for the tabby:// URL scheme on all platforms. The URL scheme handler supports a run command that directly executes OS commands with no user confirmation, sanitization, or sandboxing. An attacker can craft a malicious link (tabby://run?command=...) and deliver it via a website, email, chat message, or any other medium. When a victim clicks the link, the OS launches Tabby which immediately spawns the specified command as a child process with the user's full privileges. This is a zero-click-after-link-visit RCE vulnerability. This vulnerability is fixed in 1.0.233.

SeverityHigh
CVSS8.8
Exploit probability—
ProductTabby
PublishedMay 15, 2026
First seenMay 15, 2026

How to fix

Update
  • tabby tabby1.0.233 or later

Affected products

ProductAffected versionsFixed in
tabby tabbyv < 1.0.2331.0.233

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