What is GHSA-h8r9-r2r8-gxj7?

GHSA-h8r9-r2r8-gxj7 is a security advisory published by GitHub Security Advisories with High severity. SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor...

Which CVE IDs does GHSA-h8r9-r2r8-gxj7 cover?

GHSA-h8r9-r2r8-gxj7 covers the following CVE IDs: CVE-2026-124492. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h8r9-r2r8-gxj7?

GHSA-h8r9-r2r8-gxj7 has a CVSS v3 base score of 7.6, published by GitHub Security Advisories.

GHSA-h8r9-r2r8-gxj7HighCVSS 7.6

SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor...

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-124492 →

📋 Description

SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor's #createBookmarkList, which inserts entity-decoded h1-h6 header textContent into the bookmark list via innerHTML without escaping. Attackers can store HTML-encoded payloads in editor headers that execute JavaScript when a victim opens the link modal and types # in the URL input.

🔗 References (4)

https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56
https://nvd.nist.gov/vuln/detail/CVE-2026-124492
https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-link-modal-bookmark-list
https://github.com/advisories/GHSA-h8r9-r2r8-gxj7