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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/Eugeny/tabby/security/advisories/GHSA-hf8h-rjrf-3jg6 Exploit, Vendor Advisory
- https://github.com/Eugeny/tabby/security/advisories/GHSA-hf8h-rjrf-3jg6 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.4 · tabbyNVD modified 2026-10-26 14:10
Affected (CPE criteria) 1
cpe:2.3:a:tabby:tabby:*:*:*:*:*:*:*:*
References 2
- https://github.com/Eugeny/tabby/security/advisories/GHSA-hf8h-rjrf-3jg6 Exploit, Vendor Advisory
- https://github.com/Eugeny/tabby/security/advisories/GHSA-hf8h-rjrf-3jg6 Exploit, Vendor Advisory