CVE-2023-26149

Name: CVE-2023-26149
Creator: NVD / NIST
Published: 2023-09-28T05:15:46.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2023-26149 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Versions of the package quill-mention before 4.0.0 are vulnerable to Cross-site Scripting (XSS) due to improper user-input sanitization, via the renderList function. **Note:** If the mentions list is sourced from unsafe (user-sourced) data, this might allow an injection attack when a Quill user hits @.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

Versions of the package quill-mention before 4.0.0 are vulnerable to Cross-site Scripting (XSS) due to improper user-input sanitization, via the renderList function. **Note:** If the mentions list is sourced from unsafe (user-sourced) data, this might allow an injection attack when a Quill user hits @.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.57%

42.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Quill-Mention	Quill Mention	< 4.0.0

References

https://codepen.io/ALiangLiang/pen/mdQMJXKExploit
https://github.com/quill-mention/quill-mention/blob/0aa9847719257496b14ac5401872c4e2ffcbc3d1/src/quill.mention.js%23L391Broken Link
https://github.com/quill-mention/quill-mention/commit/e85262ddced0a7f0b6fc8350d236a68bd1e28385Patch
https://github.com/quill-mention/quill-mention/issues/255Exploit, Issue Tracking
https://github.com/quill-mention/quill-mention/pull/341Issue Tracking, Patch
https://security.snyk.io/vuln/SNYK-JS-QUILLMENTION-5921549Third Party Advisory
https://codepen.io/ALiangLiang/pen/mdQMJXKExploit
https://github.com/quill-mention/quill-mention/blob/0aa9847719257496b14ac5401872c4e2ffcbc3d1/src/quill.mention.js%23L391Broken Link
https://github.com/quill-mention/quill-mention/commit/e85262ddced0a7f0b6fc8350d236a68bd1e28385Patch
https://github.com/quill-mention/quill-mention/issues/255Exploit, Issue Tracking
https://github.com/quill-mention/quill-mention/pull/341Issue Tracking, Patch
https://security.snyk.io/vuln/SNYK-JS-QUILLMENTION-5921549Third Party Advisory

Timeline

Published: Sep 28, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-26149?

How severe is CVE-2023-26149?

CVE-2023-26149 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2023-26149?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-26149?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST