Critical 10.0Published Sep 23, 2026

CVE-2026-59167SunEditor: Critical XSS vulnerability - sanitizer bypass

Updated under an hour ago (2026-10-19 07:23 UTC)

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It affects JiHong88 suneditor. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for JiHong88 suneditor

Exploited in the last 30 days

SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11, the sanitizer in src/lib/core.js does not consistently reject namespaced or custom HTML elements, allowing event-handler attributes to remain on crafted elements. When an application renders attacker-controlled editor content and a user interacts with the element, the retained handler can execute script in the application's browser origin, enabling stored cross-site scripting, data exposure, or unauthorized browser-context actions. This issue is fixed in version 2.47.11.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

JiHong88 suneditor jihong88:suneditor (from the name)	before 2.47.11	CNA record

References

https://github.com/JiHong88/suneditor/security/advisories/GHSA-6rf4-v2fh-m6p4x-refsource-confirm
https://github.com/JiHong88/suneditor/issues/1646x-refsource-misc
https://github.com/JiHong88/suneditor/commit/a94ace269c7102bfb6de58a27a6547bc4eb09045x-refsource-misc
https://github.com/JiHong88/suneditor/releases/tag/2.47.11x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.