CVE-2021-3163
Cross-site Scripting in quill
4.2
MEDIUM
CVSS 3.1
EPSS 0.50%
Description
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. No patch exists and no further releases are planned. This CVE is disputed. Researchers have claimed that this issue is not within the product itself, but is intended behavior in a web browser. More information can be found [here](https://github.com/quilljs/quill/issues/3364).
How to fix CVE-2021-3163
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- —no fix listed
Is CVE-2021-3163 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, <= 1.3.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |