CVE-2021-3163 — MEDIUM (6.1)

Vulnerability Description

A vulnerability in the HTML editor of Slab Quill 4.8.0 allows an attacker to execute arbitrary JavaScript by storing an XSS payload (a crafted onloadstart attribute of an IMG element) in a text field. Note: Researchers have claimed that this issue is not within the product itself, but is intended behavior in a web browser

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Slab	Quill	4.8.0

Related Weaknesses (CWE)

CWE-79

References

https://burninatorsec.blogspot.com/2021/04/cve-2021-3163-xss-slab-quill-js.htmlExploitThird Party Advisory
https://github.com/quilljs/quill/issues/3273Broken LinkIssue TrackingThird Party Advisory
https://github.com/quilljs/quill/issues/3364ExploitIssue TrackingThird Party Advisory
https://quilljs.comProduct
https://burninatorsec.blogspot.com/2021/04/cve-2021-3163-xss-slab-quill-js.htmlExploitThird Party Advisory
https://github.com/quilljs/quill/issues/3273Broken LinkIssue TrackingThird Party Advisory
https://github.com/quilljs/quill/issues/3364ExploitIssue TrackingThird Party Advisory
https://quilljs.comProduct

FAQ

What is CVE-2021-3163?

CVE-2021-3163 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A vulnerability in the HTML editor of Slab Quill 4.8.0 allows an attacker to execute arbitrary JavaScript by storing an XSS payload (a crafted onloadstart attribute of an IMG element) in a text field....

How severe is CVE-2021-3163?

CVE-2021-3163 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-3163?

Check the references section above for vendor advisories and patch information. Affected products include: Slab Quill.