Quill is vulnerable to XSS via HTML export feature
A lack of data validation vulnerability in the HTML export feature in Quill in allows Cross-Site Scripting (XSS). This issue affects Quill: 2.0.3.
Advisories for Npm/Quill package
2026
2021
Cross-site Scripting
A vulnerability in the HTML editor of Slab Quill allows an attacker to execute arbitrary JavaScript by storing an XSS payload (a crafted onloadstart attribute of an IMG element) in a text field.
2020
Reverse Tabnabbing in quill
Versions of quill prior to 1.3.7 are vulnerable to Reverse Tabnabbing. The package uses target='_blank' in anchor tags, allowing attackers to access window.opener for the original page when opening links. This is commonly used for phishing attacks. Recommendation No fix is currently available. Consider using an alternative package until a fix is made available.