What’s Vulnerable › Vulnerabilities

CVE-2025-15056: Quill 2.0.3 - Lack of data validation in HTML export allowing XSS

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-13 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Slab Quill: 2.0.3

References

• https://fluidattacks.com/advisories/diomedes
• https://github.com/slab/quill

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