Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-45036— Tabby auto-confirms ZMODEM detection on terminal output, leading to shell command execution from displayed file content under fish, bash, and zsh

Quick assessment

Affected
Eugeny tabby
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tabby（Terminus）是Eugene个人开发者的一个适用于 Windows 10、macOS 和 Linux 的高度可配置的终端仿真器、SSH 和串行客户端。 Tabby 1.0.233之前版本存在操作系统命令注入漏洞，该漏洞源于自动确认ZMODEM协议检测且无用户交互，可能导致攻击者通过特制文件实现代码执行。

CVSS 7.0 · High EPSS 0.18% · P7

Affected Version Matrix 1

VendorProduct Version RangeStatus
Eugeny tabby < 1.0.233 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-45036

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Tabby auto-confirms ZMODEM detection on terminal output, leading to shell command execution from displayed file content under fish, bash, and zsh
Source: CVE Program / CVE List V5
Vulnerability Description
Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby before 1.0.233 automatically confirms ZMODEM protocol detection on all terminal session output without user interaction, enabling shell command execution when a user displays attacker-controlled content. The ZModemMiddleware in tabby-terminal consumes all session output through a Zmodem.Sentry, and when a ZMODEM ZRQINIT header is detected, unconditionally calls detection.confirm() and writes a fixed ZRINIT response ( **\x18B0100000023be50\r\n\x11) back into the active PTY as input. When the process that triggered the detection (e.g., cat) exits, the injected bytes are consumed by the user's shell as a command line. Under fish (default configuration), the ** prefix triggers recursive glob expansion against the current directory, allowing an attacker-placed executable at a matching nested path (e.g., d/xB0100000023be50) to be executed by relative pathname without relying on PATH. Under bash and zsh, a secondary xterm.js terminal color-query feedback (OSC 10) can be combined in the same file to inject a slash-containing command word that similarly bypasses PATH resolution. An attacker can exploit this by providing a crafted file (e.g., in a cloned Git repository) that a user displays with cat, achieving code execution with no interaction beyond viewing the file. This vulnerability is fixed in 1.0.233.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Tabby 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tabby（Terminus）是Eugene个人开发者的一个适用于 Windows 10、macOS 和 Linux 的高度可配置的终端仿真器、SSH 和串行客户端。 Tabby 1.0.233之前版本存在操作系统命令注入漏洞，该漏洞源于自动确认ZMODEM协议检测且无用户交互，可能导致攻击者通过特制文件实现代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eugeny tabby < 1.0.233 -

II. Public POCs for CVE-2026-45036

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-45036

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-45036 (1)

Same Patch Batch · Eugeny · 2026-05-15 · 4 CVEs total

CVE-2026-45037 7.1 HIGH Tabby: Unsafe protocol handler execution via terminal linkifier allows arbitrary OS protoc
CVE-2026-45035 Tabby: RCE via `tabby://run` URL Scheme
CVE-2026-45038 Tabby: Dragging and Dropping a File into Tabby Can Lead to Code Execution

IV. Related Vulnerabilities

Same product: tabby
Same vendor: Eugeny
Same weakness: CWE-78

V. Comments for CVE-2026-45036

No comments yet

Leave a comment