Vulnerability Description
CodeWhale (packages codewhale / codewhale-tui) versions >= 0.8.41 and < 0.8.64 contain a remote code execution vulnerability in the rlm_eval tool. The tool's approval_requirement() returns ApprovalRequirement::Auto, which the engine treats as 'never prompt,' causing arbitrary model-supplied Python code to run in a python3 interpreter without consulting the user's configured --approval-policy and without any approval prompt or audit step. An attacker can induce the agent to execute arbitrary code via prompt injection in untrusted content the agent reads (a web page, fetched URL, repository file, or MCP tool result); the companion rlm_open tool can stage such content. Code runs on the user's machine at the user's privilege level. Fixed in 0.8.64.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/Hmbown/CodeWhale/commit/57f3c89471e27ac4032d9791f6885e5d4408c
- https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f
- https://www.vulncheck.com/advisories/codewhale-rlm-eval-before-remote-code-execu
- https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f
FAQ
What is CVE-2026-75858?
CVE-2026-75858 is a vulnerability with a CVSS score of 7.8 (HIGH). CodeWhale (packages codewhale / codewhale-tui) versions >= 0.8.41 and < 0.8.64 contain a remote code execution vulnerability in the rlm_eval tool. The tool's approval_requirement() returns ApprovalReq...
How severe is CVE-2026-75858?
CVE-2026-75858 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-75858?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.