Command Injection Vulnerability in Roo Code by Geo Chen
CVE-2026-63108

7.7HIGH

Key Information:

Vendor

Roocodeinc

Status
Roo-code
Vendor
CVE Published:
20 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-63108?

Roo Code versions prior to 3.54.0 are susceptible to a command injection vulnerability that exploits the auto-approve feature. This flaw allows attackers to bypass predefined allowlist and denylist checks by nesting command substitutions within parameter expansions. The issue arises from the command parser in parse-command.ts, which replaces parameter expansions with generic placeholders prior to evaluating command substitutions. As a result, this mechanism fails to detect nested dangerous substitutions, permitting unauthorized commands to be executed due to the outer allowlisted command prefix. This potentially exposes systems to arbitrary command execution risks.

Affected Version(s)

Roo-Code 0 <= 3.54.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-63108 - Proof of Concept

References

https://github.com/geo-chen/oss/blob/main/Roo-Code.md
technical-descriptionexploit
https://www.vulncheck.com/advisories/roo-code-command-inj...
third-party-advisory

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.