What’s Vulnerable › Vulnerabilities

CVE-2023-26149

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-28 · updated 2026-06-17
• Weakness: CWE-79

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 @.

Affected products

• quill-mention: before 4.0.0 — fixed in 4.0.0

How to fix

Upgrade to a fixed version: quill-mention 4.0.0. Check the vendor advisory for mitigations.

References

• https://codepen.io/ALiangLiang/pen/mdQMJXK
• https://github.com/quill-mention/quill-mention/blob/0aa9847719257496b14ac5401872c4e2ffcbc3d1/src/quill.mention.js%23L391
• https://github.com/quill-mention/quill-mention/commit/e85262ddced0a7f0b6fc8350d236a68bd1e28385
• https://github.com/quill-mention/quill-mention/issues/255
• https://github.com/quill-mention/quill-mention/pull/341
• https://security.snyk.io/vuln/SNYK-JS-QUILLMENTION-5921549
• https://codepen.io/ALiangLiang/pen/mdQMJXK
• https://github.com/quill-mention/quill-mention/blob/0aa9847719257496b14ac5401872c4e2ffcbc3d1/src/quill.mention.js%23L391
• https://github.com/quill-mention/quill-mention/commit/e85262ddced0a7f0b6fc8350d236a68bd1e28385
• https://github.com/quill-mention/quill-mention/issues/255
• https://github.com/quill-mention/quill-mention/pull/341
• https://security.snyk.io/vuln/SNYK-JS-QUILLMENTION-5921549

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