CVE-2023-26149 — Versions of the package quill-mention before 4

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

01What is this vulnerability?

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 @.

02Affected products

Vendor	Product	Versions
n	a / quill	mention — 0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-09-28T05:00:02.741Z
• Last modified: 2024-09-23T19:01:41.735Z

09References

• security.snyk.io — https://security.snyk.io/vuln/SNYK-JS-QUILLMENTION-5921549
• github.com — https://github.com/quill-mention/quill-mention/blob/0aa9847719257496b14ac5401872…
• codepen.io — https://codepen.io/ALiangLiang/pen/mdQMJXK
• github.com — https://github.com/quill-mention/quill-mention/issues/255
• github.com — https://github.com/quill-mention/quill-mention/pull/341
• github.com — https://github.com/quill-mention/quill-mention/commit/e85262ddced0a7f0b6fc8350d2…