Is this vulnerability remotely exploitable?

Yes, in many designs. If a remote user can supply or significantly influence expressions evaluated by SimpleEval, and the application passes objects or callbacks into the evaluator, the issue can often be exploited over the network.

What level of access does an attacker need?

The attacker generally needs the ability to control or influence the evaluated expression, or the objects/callbacks exposed to the expression. This commonly arises in features like user-defined formulas, rules, or scripts, especially in multi-tenant or SaaS applications.

What is the safest general fix pattern?

Treat SimpleEval as a convenience tool, not a security sandbox. Restrict the evaluation context to simple, immutable data and a tightly controlled set of pure, side-effect-free helper functions. Remove or wrap any callbacks that can reach dangerous modules, perform I/O, or access arbitrary attributes.

Severity:

CRITICAL RISK

(9.8)

Sandbox Escape via Insecure Expression Evaluation (CWE-94) in SimpleEval

CVE-2026-32640

Published:

Mar 16, 2026

Status:

Modified

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Code Injection / Sandbox Escape

CWE:

CWE-94;CWE-915

Impact:

Arbitrary Code Execution within the Host Python Process

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Code Injection / Sandbox Escape

CWE:

CWE-94;CWE-915

Impact:

Arbitrary Code Execution within the Host Python Process

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Sandbox Escape via Insecure Expression Evaluation (CWE-94) in SimpleEval

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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