GHSA-qmcq-xw74-w667 uniget CLI has an EDITOR Command Injection

• Go gitlab.com/uniget-org/cli: < 0.27.6 → fixed in 0.27.6

Summary The uniget CLI has a command injection vulnerability in hooks.go line 199 where strings.Split(editor, " ") naively parses the EDITOR environment variable without respecting shell syntax. An attacker can set EDITOR="/path/to/wrapper && id && echo" which gets split into separate arguments, allowing the wrapper script to execute arbitrary commands like id. This was successfully exploited to execute uid=1000(w4nn4d13), confirming code execution is possible. The vulnerability affects hook editing and breaks configurations with modern editors like VSCode. Vulnerable Code: ``` editorWithArgs := strings.Split(editor, " ") ``` Location Context: ``` editor := os.Getenv("UNIGET_EDITOR") if len(editor) == 0 { editor = os.Getenv("EDITOR") } editorWithArgs := strings.Split(editor, " ") // ← VULNERABLE command := exec.Command(editorWithArgs[0], editorWithArgs[1:]...) ``` Issue: Naive space-splitting allows injection. EDITOR="script && id && echo" splits into ["script", "&&", "id", "&&", "echo"] enabling command execution. Step to Reproduce Step 1: Create malicious editor wrapper ``` mkdir -p /tmp/poc-editor cat > /tmp/poc-editor/editor_wrapper.sh ~/.config/uniget/hooks/pre-install/test.sh