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CVE-2021-32819— Remote code execution in squirrelly

Quick assessment

Affected
squirrellyjs squirrelly
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

npm Npm squirrelly是美国npm公司的一个应用软件。提供一个使用JavaScript实现的现代，可配置且功能强大的快速模板引擎。 Squirrelly 存在信息泄露漏洞，该漏洞源于通过Express渲染API将纯模板数据与引擎配置选项混合。通过覆盖内部配置选项，可以在下游应用程序中触发远程代码执行。

CVSS 8.0 · High EPSS 58.29% · P99

Public Exploits 1

Nuclei · 1 CVE-2021-32819.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-32819

Vulnerability Information
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Vulnerability Title
Remote code execution in squirrelly
Source: CVE Program / CVE List V5
Vulnerability Description
Squirrelly is a template engine implemented in JavaScript that works out of the box with ExpressJS. Squirrelly mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options remote code execution may be triggered in downstream applications. This issue is fixed in version 9.0.0. For complete details refer to the referenced GHSL-2021-023.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Squirrelly 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
npm Npm squirrelly是美国npm公司的一个应用软件。提供一个使用JavaScript实现的现代，可配置且功能强大的快速模板引擎。 Squirrelly 存在信息泄露漏洞，该漏洞源于通过Express渲染API将纯模板数据与引擎配置选项混合。通过覆盖内部配置选项，可以在下游应用程序中触发远程代码执行。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
squirrellyjs squirrelly 9.0.0 ~ 9.0.0 -

II. Public POCs for CVE-2021-32819

# POC Description Source Link Shenlong Link
1 SquirrellyJS mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options, remote code execution may be triggered in downstream applications. https://github.com/Abady0x1/CVE-2021-32819 POC Details
2 Nodejs Squirrelly is susceptible to remote code execution. Squirrelly is a template engine implemented in JavaScript that works out of the box with ExpressJS. Squirrelly mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options remote code execution may be triggered in downstream applications. There is currently no fix for these issues as of the publication of this CVE. The latest version of squirrelly is currently 8.0.8. For complete details refer to the referenced GHSL-2021-023. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-32819.yaml POC Details
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III. Intelligence Information for CVE-2021-32819

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Patches & Fixes for CVE-2021-32819 (2)

Other References for CVE-2021-32819 (1)

IV. Related Vulnerabilities

Same weakness: CWE-200

V. Comments for CVE-2021-32819

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