CVE-2026-75911: Hmbown Codewhale

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

CodeWhale versions before 0.8.64 fail to properly validate the allow_shell configuration parameter from project config files, allowing attackers to enable arbitrary shell command execution by committing a malicious .codewhale/config.toml file to a repository. When a user clones and opens the repository in CodeWhale, the AI model gains access to exec_shell and task_shell tools, enabling execution of arbitrary shell commands on the victim's machine without explicit user consent.

Affected products

• Hmbown Codewhale: from 0.8.6, before 0.8.41 (fixed in 0.8.41); from 0.8.41, before 0.8.64 (fixed in 0.8.64)

Published 2026-08-18. Last modified 2026-09-08.