Remote Code Execution Vulnerability in CodeWhale by Hmbown
CVE-2026-75858

8.5HIGH

Key Information:

Vendor

Hmbown

Status
Codewhale
Vendor
CVE Published:
18 August 2026

What is CVE-2026-75858?

CodeWhale versions 0.8.41 through 0.8.63 include a vulnerability in the rlm_eval tool, which allows an attacker to execute arbitrary Python code remotely. The issue arises because the tool's approval_requirement() function is set to return ApprovalRequirement::Auto, bypassing user configuration for approval policies. This can lead to unintended execution of malicious code when the agent processes untrusted content such as web pages or file inputs. Users should upgrade to version 0.8.64 or later to mitigate this risk.

Affected Version(s)

CodeWhale 0.8.33 < 0.8.41

CodeWhale 0.8.33 < 0.8.41

CodeWhale 0.8.41 < 0.8.64

References

https://github.com/Hmbown/CodeWhale/security/advisories/G...
vendor-advisory
https://github.com/Hmbown/CodeWhale/commit/57f3c89471e27a...
patch
https://www.vulncheck.com/advisories/codewhale-rlm-eval-b...
third-party-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

sai-sh
.