CVE-2026-75858

CodeWhale rlm_eval before 0.8.64 Remote Code Execution

State: Published
Severity: 8.5 High
Published: Aug 18, 2026
Updated: Aug 18, 2026
Reserved: Aug 18, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
CodeWhaleHmbown	0.8.33 to before 0.8.41Affected 0.8.41Not affected
CodeWhaleHmbown	0.8.33 to before 0.8.41Affected 0.8.41Not affected
CodeWhaleHmbown	0.8.41 to before 0.8.64Affected 0.8.64Not affected
CodeWhaleHmbown	0.8.41 to before 0.8.64Affected 0.8.64Not affected

References

GitHub Security Advisory (GHSA-wrj3-vj8c-784f)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: CodeWhale rlm_eval before 0.8.64 Remote Code Executionthird-party-advisory

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