CVE-2026-75858
CodeWhale rlm_eval before 0.8.64 Remote Code Execution
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.
INFO
Published Date :
Aug. 18, 2026, 4:18 p.m.
Last Modified :
Aug. 18, 2026, 4:18 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-75858
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update CodeWhale to version 0.8.64 or later.
- Avoid processing untrusted content with older versions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-75858.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-75858 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-75858
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-75858 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-75858 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Hmbown', 'product': 'CodeWhale', 'versions': [{'status': 'affected', 'version': '0.8.33', 'lessThan': '0.8.41', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.8.41', 'versionType': 'semver'}], 'packageURL': 'pkg:cargo/deepseek-tui', 'defaultStatus': 'unaffected'}, {'vendor': 'Hmbown', 'product': 'CodeWhale', 'versions': [{'status': 'affected', 'version': '0.8.33', 'lessThan': '0.8.41', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.8.41', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/deepseek-tui', 'defaultStatus': 'unaffected'}, {'vendor': 'Hmbown', 'product': 'CodeWhale', 'versions': [{'status': 'affected', 'version': '0.8.41', 'lessThan': '0.8.64', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.8.64', 'versionType': 'semver'}], 'packageURL': 'pkg:cargo/codewhale-tui', 'defaultStatus': 'unaffected'}, {'vendor': 'Hmbown', 'product': 'CodeWhale', 'versions': [{'status': 'affected', 'version': '0.8.41', 'lessThan': '0.8.64', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.8.64', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/codewhale', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-94 Added Reference https://github.com/Hmbown/CodeWhale/commit/57f3c89471e27ac4032d9791f6885e5d4408c381 Added Reference https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f Added Reference https://www.vulncheck.com/advisories/codewhale-rlm-eval-before-remote-code-execution