CVE-2026-75858: high-severity vulnerability in Hmbown CodeWhale
CodeWhale rlm_eval before 0.8.64 Remote Code Execution
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.5epss 0.4%
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:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Hmbown · CodeWhaleRelated CVEs — Hmbown CodeWhale
In the same product, most dangerous first.
CVE-2026-75915HIGHCodeWhale before 0.8.64 Environment Variable Leak via js_executionEPSS 0.7%CVE-2026-45311CRITICALCodeWhale: run_tests Tool Enables RCE via Malicious Repository Without ApprovalEPSS 0.6%CVE-2026-75914HIGHCodeWhale before 0.8.64 Path Traversal via image_analyze symlinkEPSS 0.5%CVE-2026-75859HIGHCodeWhale before 0.8.64 Arbitrary File Read via instructionsEPSS 0.5%CVE-2026-75856CRITICALCodeWhale before 0.8.64 SSRF Bypass via DNS Pinning TOCTOUEPSS 0.5%CVE-2026-75913HIGHCodeWhale before 0.8.64 Argument Injection via git_showEPSS 0.5%