Is CVE-2025-15056 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-15056 being exploited in the wild.

How severe is CVE-2025-15056?

Medium severity, with a CVSS score of 6.1, published 13 January 2026.

Is there a fix for CVE-2025-15056?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2025-15056 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2025-15056?

Check whether you run quill (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-15056: Slab Quill XSS in HTML export feature

CVE-2025-15056 · Severity: medium · CVSS 6.1 · Published 2026-01-13

Quill is a popular web-based text editor used to provide rich text editing capabilities in applications. A security flaw in its HTML export feature allows an attacker to inject malicious scripts into content. If a user views or processes this exported content, the script could execute in their browser, potentially leading to unauthorized actions or data theft.

Technologies: quill (npm). Vendors: npm.

Quick answers

Is CVE-2025-15056 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-15056 being exploited in the wild.
How severe is CVE-2025-15056?: Medium severity, with a CVSS score of 6.1, published 13 January 2026.
Which products and versions are affected?: quill (npm) = 2.0.3.
Is there a fix for CVE-2025-15056?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-15056 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2025-15056?: Check whether you run quill (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Cross-Site Scripting (XSS) vulnerability exists in Quill version 2.0.3 due to improper neutralization of input during web page generation (CWE-79) within the HTML export functionality. The root cause is a lack of sufficient data validation when the editor constructs HTML output from user-influenced content. An attacker can exploit this by crafting malicious input that, when exported and subsequently rendered in a victim's browser, executes arbitrary JavaScript. This attack requires user interaction (viewing the exported content) and can lead to a compromise of the integrity and confidentiality of the user's session. As of the advisory date, no patched version has been identified.

Affected products

slab quill 2.0.3

Identifiers

CVE-2025-15056
GHSA-v3m3-f69x-jf25

Timeline

2026-01-13: disclosed: Vulnerability disclosed and CVE-2025-15056 assigned.
2026-01-13: advisory: GitHub Advisory GHSA-v3m3-f69x-jf25 published.

References

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