PT-2026-2446 · Slab+1 · Quill

Cristian Vargas · Published 2026-01-13 · Updated 2026-03-10 · CVE-2025-15056

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Quill version 2.0.3

Description A flaw exists in the HTML export feature of Quill that does not properly validate data, potentially leading to Cross-Site Scripting (XSS). This issue was identified by Fluid Attacks' research team.

Recommendations Update to a newer version of Quill that addresses this vulnerability. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Special Elements Injection

Weakness Enumeration

CWE-79

CWE-74

Related Identifiers

CVE-2025-15056

GHSA-V3M3-F69X-JF25

Affected Products

Quill

References · 6

• 🔥 https://fluidattacks.com/advisories/diomedes · Exploit
• https://osv.dev/vulnerability/CVE-2025-15056 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-v3m3-f69x-jf25 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-15056 · Security Note
• https://github.com/slab/quill · Note
• https://twitter.com/fluidattacks/status/2031480211900870845 · Twitter Post