What is GHSA-m98v-phcq-735w?

GHSA-m98v-phcq-735w is a security advisory published by GitHub Security Advisories with Medium severity. SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the FileUpload...

Which CVE IDs does GHSA-m98v-phcq-735w cover?

GHSA-m98v-phcq-735w covers the following CVE IDs: CVE-2026-124491. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-m98v-phcq-735w?

GHSA-m98v-phcq-735w has a CVSS v3 base score of 6.4, published by GitHub Security Advisories.

GHSA-m98v-phcq-735wMediumCVSS 6.4

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

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-124491 →

📋 Description

SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the FileUpload plugin create() method that assigns server-returned file names to innerHTML without escaping. Attackers can upload files with HTML-laden names that bypass html.clean() and execute JavaScript in victims' browsers when content or gallery items load, enabling session theft.

🔗 References (4)

https://github.com/JiHong88/suneditor/security/advisories/GHSA-2w4v-r3v4-f5h4
https://nvd.nist.gov/vuln/detail/CVE-2026-124491
https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-fileupload-plugin-filename
https://github.com/advisories/GHSA-m98v-phcq-735w