Remote code execution via the `pretty` option.

Description

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.

Recommendation

Update the pug package to the latest compatible version. Followings are version details:

• Affected version(s): < 3.0.1
• Patched version(s): 3.0.1

References

• GHSA-p493-635q-r6gr
• www.npmjs.com
• CVE-2021-21353
• CWE-74
• CWE-94
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Angular Expressions - Remote Code Execution - CVE-2021-21277
• seroval Affected by Remote Code Execution via JSON Deserialization - CVE-2026-23737
• Lobe Chat Desktop vulnerable to Remote Code Execution via XSS in Chat Messages - CVE-2025-59417
• Remote code execution in Eclipse Theia - CVE-2021-34435

Tags:

npm

pug