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CVE-2026-32640— (SimpleEval) Objects (including modules) can leak dangerous modules through to direct access inside the sandbox.

Quick assessment

Affected
danthedeckie simpleeval
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

simpleeval是Daniel个人开发者的一个Python表达式安全求值库。 SimpleEval 1.0.5之前版本存在安全漏洞，该漏洞源于对象可能通过属性直接访问沙箱内的危险模块，如果作为名称传递给SimpleEval的对象具有模块或其他不允许的危险对象作为属性可用，或者通过将危险函数或模块作为回调传递给其他安全函数来调用，可能导致访问危险函数或模块。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
danthedeckie simpleeval < 1.0.5 affected
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I. Basic Information for CVE-2026-32640

Vulnerability Information
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Vulnerability Title
(SimpleEval) Objects (including modules) can leak dangerous modules through to direct access inside the sandbox.
Source: CVE Program / CVE List V5
Vulnerability Description
SimpleEval is a library for adding evaluatable expressions into python projects. Prior to 1.0.5, objects (including modules) can leak dangerous modules through to direct access inside the sandbox. If the objects you've passed in as names to SimpleEval have modules or other disallowed / dangerous objects available as attrs. Additionally, dangerous functions or modules could be accessed by passing them as callbacks to other safe functions to call. The latest version 1.0.5 has this issue fixed. This vulnerability is fixed in 1.0.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Vulnerability Title
simpleeval 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
simpleeval是Daniel个人开发者的一个Python表达式安全求值库。 SimpleEval 1.0.5之前版本存在安全漏洞，该漏洞源于对象可能通过属性直接访问沙箱内的危险模块，如果作为名称传递给SimpleEval的对象具有模块或其他不允许的危险对象作为属性可用，或者通过将危险函数或模块作为回调传递给其他安全函数来调用，可能导致访问危险函数或模块。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
danthedeckie simpleeval < 1.0.5 -

II. Public POCs for CVE-2026-32640

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III. Intelligence Information for CVE-2026-32640

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Vendor Advisories for CVE-2026-32640 (1)

IV. Related Vulnerabilities

Same weakness: CWE-915

V. Comments for CVE-2026-32640

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