Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-21353— Remote code execution in pug

Quick assessment

Affected
pugjs pug
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.

Tmont Pug是 （Tmont）开源的一个应用软件。提供了优化html的方式。 Pug 存在注入漏洞，攻击者可利用该漏洞编译器的“pretty”选项。

CVSS 6.8 · Medium EPSS 4.30% · P91

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-21353

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Remote code execution in pug
Source: CVE Program / CVE List V5
Vulnerability Description
Pug is an npm package which is a high-performance template engine. In pug before version 3.0.1, if a remote attacker was able to control the `pretty` option of the pug compiler, e.g. if you spread a user provided object such as the query parameters of a request into the pug template inputs, it was possible for them to achieve remote code execution on the node.js backend. This is fixed in version 3.0.1. This advisory applies to multiple pug packages including "pug", "pug-code-gen". pug-code-gen has a backported fix at version 2.0.3. This advisory is not exploitable if there is no way for un-trusted input to be passed to pug as the `pretty` option, e.g. if you compile templates in advance before applying user input to them, you do not need to upgrade.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Pug 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tmont Pug是 （Tmont）开源的一个应用软件。提供了优化html的方式。 Pug 存在注入漏洞，攻击者可利用该漏洞编译器的“pretty”选项。
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
pugjs pug < 3.0.1 -

II. Public POCs for CVE-2021-21353

# POC Description Source Link Shenlong Link
1 None https://github.com/jinsu9758/PUG-RCE-CVE-2021-21353-POC POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-21353

请登录查看更多情报信息。

Patches & Fixes for CVE-2021-21353 (2)

Vendor Advisories for CVE-2021-21353 (1)

Other References for CVE-2021-21353 (4)

IV. Related Vulnerabilities

Same weakness: CWE-74