Root code execution via shell-interpolated file path
Published Jul 21, 2026 · Updated Jul 21, 2026
OS command injection in Bytebot at commit 3d37894ce07ef8d8b40adc7fd309ad96c2a71313 allows remote attackers to execute code as root. The computer_write_file handler interpolates its attacker-controlled path into sudo shell commands executed by exec(), allowing shell metacharacters and command substitution to run. Exploitation requires reachability of the MCP tools service without effective access control, or indirect invocation through an agent; execution is confined to the container unless its isolation is weakened.
Summary
What happened
OS command injection in Bytebot at commit 3d37894ce07ef8d8b40adc7fd309ad96c2a71313 allows remote attackers to execute code as root. The computer_write_file handler interpolates its attacker-controlled path into sudo shell commands executed by exec(), allowing shell metacharacters and command substitution to run. Exploitation requires reachability of the MCP tools service without effective access control, or indirect invocation through an agent; execution is confined to the container unless its isolation is weakened.
The record
- CVE
- CVE-2026-30631
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-78, T1059.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- bytebot RCE descriptionproof of concept · unverified
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Technologies
Your stack
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Your stack
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