CVE-2026-45035: Tabby: RCE via `tabby://run` URL Scheme
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45035?
CVE-2026-45035 is considered a critical vulnerability due to the arbitrary code execution it enables.
How do I fix CVE-2026-45035?
To mitigate CVE-2026-45035, upgrade to Tabby version 1.0.233 or later.
What platforms are affected by CVE-2026-45035?
CVE-2026-45035 affects all platforms supported by Tabby that are running versions prior to 1.0.233.
What are the risks associated with CVE-2026-45035?
The primary risk associated with CVE-2026-45035 is that an attacker can execute arbitrary OS commands remotely.
What should I do if I cannot upgrade to fix CVE-2026-45035?
If upgrading is not an option, avoid using the tabby:// URL scheme until a fix is implemented.